Questions and asking for opinion about aircraft list sorting (Multi nations)

[Eagle114th 483]

Hello everyone,

It has been a long time since I have flown SF2 series sim. I am now back after seeing the news about SF2 being updated for Windows 10. I also missed flying SF2, I have been going through a very busy life.  Now that I am balancing the times between hobbies, work, and living.  I am wiping whole SF2 series installations and start over from scratch.  I am truly overwhelmed by steer many amounts of mods available for SF2, especially with the fact that the modders are still enjoying modding and flying SF2.  It is truly awesome to see that here!  It has been decided that 

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Here are the questions.

(QUESTIONS #1)

 I want to know how people manage the aircraft list for a multi nation in a multi-SF2 installations?

I'll use F-15s as an example, it has F-15s for USAF, USN, HAF, IDF, and another countries.  Since there are no features I am aware of in SF2 that would filter the aircraft list based on the nations yet.  So if I install over 100+ flyable planes in SF2, i would have to scroll through a long list trying to find out which countries have the specific aircraft.

I am thinking about doing this way:

1) Rename each aircraft in .ini to start with each nation's military branch abbreviation.  

Let's use F-15 as an example.

[Regular SF2 aircraft list]

F-15A Eagle
F-15B Eagle
F-15C Eagle
F-15D Eagle
F-15E Strike Eagle
F-15I Ra'am (Thunder)
F-15K Eagle
etc...

I am considering re-naming all F-15's ini file, in order, for all F-15s to appear as this way:

JASDF F-15DJ Eagle
JASDF F-15J Eagle
IDF F-15I Ra'am (Thunder)
RSAF F-15S Eagle
ROKAF F-15K Eagle
USAF F-15A Eagle
USAF F-15B Eagle
USAF F-15C Eagle
USAF F-15E Strike Eagle
etc...

That way I can easily scroll through the list sorted by nations, then aircraft.  What is your opinion about this?

Questions #2:

I have noticed that with the add-on aircraft, there are many multi-nations skins for the specific aircraft.  For example, MiG-21F;  I saw the skins for multi countries for one aircraft.  I am planning on making the copies of MiG-21F (And edit their nation and ordinance in aircraft's data.ini)  and rename the folder as:

MiG-21F_RU
MiG-21F_India
MiG-21F_Syria
etc...

 

Then divide the skins into unique MiG-21Fs, that way I can easily load a specific nation's MiG-21F with their own default skins, along with their additional skins.

However, I still am wondering how SF2 handle multi-national aircraft.  Would my method be obsolete if there is a better way?   How do people handle multi-national skins for any aircraft? If There is a way to filter the list of specific national aircraft without having to make copies of specific aircraft, please share here.

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I am planning on making a multi-SF2 installations this way:

SF2 (Default - For backup / reference purposes)
SF2 Asia (This cover Korea War and Vietnam War, along other campaigns and aircraft that flies in Asia)
SF2 Middle East (This covers campaigns and aircraft that flies in Middle East)
SF2 NATO (This covers campaigns and aircraft that flies in Europe)
SF2 WARSAW (This covers Russia / Soviet and other WARSAW nations)
Note: In this, I aim to make Russia / Soviet and other WARSAW flyable only while disabling cockpits for NATO + Western aircraft.  so I can easily go through list of aircraft for Russia and other nearby nations.)
SF2 North America (This covers a huge numbers of aircraft from North America.)
SF2 South America (This covers all campaigns and aircraft from South America.)

I will do it slowly through the year. My first step is to install the campaigns and carefully merge them (if they cover the same places), terrains, and other mods that expands the SF2.  After doing all of that, I will slowly add aircraft for each nation.  As stated, before doing it, I want the opinions here.

Cheers!

Edited March 24, 2021 by Eagle114th

[bazillius 1,049]

i believe you know about USERLIST.INI in aircrafts folders?

[Eagle114th 483]

26 minutes ago, bazillius said:

i believe you know about USERLIST.INI in aircrafts folders?

I have not tweaked USERLIST.ini before. Please correct me if I am wrong, From what I have learned, it limits the nations from flying in any terrains.  Will it help me with the filtering or sorting the aircraft by nation? I have a lot more to learn about .ini modding for aircraft list in SF2.

Edited March 24, 2021 by Eagle114th

[bazillius 1,049]

Just edit and look what  happens with the game, its all easy with it. intuitive.

and look at *_NATIONS.INI too in terrains folders

[UllyB 805]

I take it you want to sort planes by nations because you are not too familiar with who has what.In this case maybe letting the names being and just adding in brackets the country would be a good idea. I know who has a specific (militar) plane in the world but i still use this method. This way you have in front of you the planes and the countries that have that type. I'm just saying it. For instance , let's say you play the Israel map and all you see are just MIGs but you don't know if they are Syrians, Lebanese, Iraqians or Egyptians. Adding the country name in the brackets will help you know on spot what nation has that MIG flight you detected.

Edited March 24, 2021 by UllyB

[Eagle114th 483]

1 hour ago, bazillius said:

Just edit and look what  happens with the game, its all easy with it. intuitive.

and look at *_NATIONS.INI too in terrains folders

May I ask for your tips / hints on this?  So far I only see USERLISTin aircraft folder, not terrains  yet  There is little information on USERLIST.ini as well. What should I do, in order, to play with it for aircraft list? 

Thank you for the advice.

[bazillius 1,049]

USERLIST.ini  is a list of countries which have this aircraft and years.

*_NATIONS.INI  limits nations on the terrain.

[Eagle114th 483]

3 hours ago, UllyB said:

I take it you want to sort planes by nations because you are not too familiar with who has what.In this case maybe letting the names being and just adding in brackets the country would be a good idea. I know who has a specific (militar) plane in the world but i still use this method. This way you have in front of you the planes and the countries that have that type. I'm just saying it. For instance , let's say you play the Israel map and all you see are just MIGs but you don't know if they are Syrians, Lebanese, Iraqians or Egyptians. Adding the country name in the brackets will help you know on spot what nation has that MIG flight you detected.

Yes!  I want to do that and at the same time, group the aircraft by each nation.  That way I can easily select the grouped aircraft by nation.  Here is what I am planning to do with aircraft folders, given two situations:

Situation #1
The aircraft by mods, are made for specific nation.  For example, from SF2 F-104 Starfighter Super Mega Pack 2016, there are many variants made for specific nations:
 

Quote

CF-104
CF-104_72
CF-104_76
F-104A
F-104A_60
F-104B
F-104C
F-104C_61
F-104C_65
F-104C_66
F-104C_67
F-104D
F-104F
F-104G
F-104G(O)
F-104G(O)NL
F-104G_82
F-104G_GAF
F-104G_GN
F-104G_ROCAF
F-104J
F-104S-ASA-CB
F-104S-ASA-CI
F-104S-ASA-M
F-104S-CB
F-104S-CI
F-104S-CB_tur
NF-104A
RF-104G

By editing each of F-104's .ini, I think it would be great to make it look like this:

Note: Please forgive me if I get the nation code name wrong. 

Quote

(With auto sorting from A to Z in SF2, it would look like this:

[AM]    F-104S-ASA-CB
[AM]    F-104S-ASA-CI
[AM]    F-104S-ASA-M
[AM]    F-104S-CB
[AM]    F-104S-CI
[GAF]    F-104F
[GAF]    F-104G
[GN]    F-104G
[JASDF]    F-104J
[RCAF]    CF-104
[RCAF]    CF-104_72
[RCAF]    CF-104_76
[ROCAF]    F-104G
[TuAF]    F-104S-CB
[USAF]    F-104A
[USAF]    F-104A_60
[USAF]    F-104B
[USAF]    F-104C
[USAF]    F-104C_61
[USAF]    F-104C_65
[USAF]    F-104C_66
[USAF]    F-104C_67
[USAF]    F-104D
[USAF]    F-104G
[USAF]    F-104G(O)
[USAF]    F-104G(O)NL
[USAF]    F-104G_82
[USAF]    NF-104A
[USAF]    RF-104G

 

Situation #2
Aircraft with multi nations skins;  Let's use MiG-21F as an example, I see many skins for Soviet, CzAFC, EAF, etc.  So what I would like to do is to make a multi of that MiG-21 and divide the skins and userlist.ini from each of these aircraft.  At the beginning, the folder looks like this:

MiG-21F

Would become this:

MiG-21F_Soviet
MiG-21F_Czech
MiG-21F_Egypt
(etc...)

Then i would divide the skins and USERLIST into each of these folders. And then in MiG-21F_Czech (as an example), I would open miG-21F_Data_ini and other files, then change  NationName= and other lines that points "SOVIET" to Czechoslovakia.

And in each .ini, variants MiG-21s in aircraft list woudl be join in each nation's code name group:

 

Quote

[SOVIET] MiG-21F Fishbed
[CzAFC]     MiG-21F
[EAF]     MiG-21F
etc...

 

This is a lot of work and again, that is why I am prepared to do it slowly through the year.  However, as stated, I am researching and asking questions, to see if there is a easier way to do this by modding aircraft list or something like that. 

Edited March 24, 2021 by Eagle114th

[Eagle114th 483]

34 minutes ago, bazillius said:

USERLIST.ini  is a list of countries which have this aircraft and years.

*_NATIONS.INI  limits nations on the terrain.

Oh, this is not exactly what I am looking for. Still, thank you for giving me the advice though!  This may be helpful wheN I want to do something different with both files. By the way, I do not want to limit the aircraft by terrains.  I was hoping that  I could add the ability to filter aircraft from aircraft list in a drop menu without having to exit sims, change the codes in .ini file, then restart sim.   If the menu is hard-coded, that is understandable.  Here is an example of what I am aiming for:

If I click on Israel from the aircraft list, then it would only display aircraft used by Israel.  If I change to other nation from a drop menu to Czech, then it would only show aircraft used by CzAFC.  

[UllyB 805]

The userlist.ini is a file added in SF2 series. It practically take the living span data from the begining of the data.ini file (in both SF1 and SF2 present) and rewrites it here. Also is added a line which tells you which country had that plane. This may seem to bring more chaos than order (i  personally ignore them for simplicity) but for someone who want rigor in his planes' folders may be hepful. An example: USSR used exclusevly a MIG-21F since 1961 to 1970. After 1962 , because of being exported to Egypt, let's say, it will apppear in the same file that Egypt used it too, in that respective period. So the file it would look like this:

[Soviet]
ServiceStartYear=1961
ServiceEndYear=1970
Availability=VERY_COMMON

[Egypt]
ServiceStartYear=1962
ServiceEndYear=1997
Availability=RARE

 

If the plane was exported along the years to more countries, they will appear in the file accordingly.But as i say this may be confusing. If you want to bypass this file and not bother with it you can do this:

In data.ini file of each plane, in the beginning of the file, you put the EXPORT parameter to FALSE. This way each country will appear with the same plane, in a interval of time separately. But because you put the name of the plane , by countries (adding brackest with the name of the country for each plane it would be simplier.

[MissionData]
NationName=SOVIET
AircraftRole=FIGHTER
AircraftCapability=DAY_ONLY
ServiceStartYear=1961
ServiceEndYear=1970
Availability=VERY_COMMON
Exported=FALSE
//ExportStartYear=1962
//ExportEndYear=2002
//ExportAvailability=VERY_COMMON

TK, the author of the game, made this file for historical accuracy, for people who want to see that and for more rigor and order in so many nations and planes.It's up to you if you want to simplify things or make them more complex as data. I just gave you an example if you want to keep things not too complicated.

So, you will be having MIG-21F(Soviet) and MIG-21F(Egypt). That is the way they look into my aicraft folder. Personally i add the userlist.ini file for each, but I don't bother with it too much. I just check if the period of time plane was available for that nation correspond with the data in data.ini file of the plane. I do that because some players put different data because they have info that that plane was earlier brought or later and forget to change the data accordingly in  userlist.ini file etc. If the data is different in data.ini file and the userlist.ini file then you will have a hard time asking yourself, why that plane, in the game's menu list won't appear in the year X or why the plane appears earlier in the list than it should, according to the data.ini data line etc

Edited March 24, 2021 by UllyB

[Eagle114th 483]

40 minutes ago, UllyB said:

The userlist.ini is a file added in SF2 series. It practically take the living span data from the begining of the data.ini file (in both SF1 abd SF1 present) and rewrites it here. Also is added a line which tell you which country had that plane. This may seem to bring more chaos than order (i  personally ignore them for simplicity) but for someone who want rigor in his planes' folders may be hepful. An example: USSR used exclusevly a MIG-21F since 1961 to 1970. After 1962 , because of being exported to Egypt, let's say, it will apppear in the same file that Egypt used it to in that respective period. So the file it would look like this:

[Soviet]
ServiceStartYear=1961
ServiceEndYear=1970
Availability=VERY_COMMON

[Egypt]
ServiceStartYear=1962
ServiceEndYear=1997
Availability=RARE

 

If the plane was exported along the years to more countries, they will appear in the file accordingly.But as i say this may be confusing. If you want to bypass this file and not bother with it you can do this:

In data.ini file of each plane, in the beginning of the file, you put the EXPORT parameter to FALSE. This way each country will appear with the same plane, in a interval of time separately. But because you put the name of the plane , by countries (adding brackest with the name of the country for each plane it would be simplier.

[MissionData]
NationName=SOVIET
AircraftRole=FIGHTER
AircraftCapability=DAY_ONLY
ServiceStartYear=1961
ServiceEndYear=1970
Availability=VERY_COMMON
Exported=FALSE
//ExportStartYear=1962
//ExportEndYear=2002
//ExportAvailability=VERY_COMMON

TK, the author of the game, made this file for historical accuracy, for people who want to see that and for more rigor and order in so many nations and planes.It's up to you if you want to simplify things or make them more complex as data. I just gave you an example if you want to keep things not too complicated.

So, you will be having MIG-21F(Soviet) and MIG-21F(Egypt). That is the way they look into my aicraft folder. Personally i add the userlist.ini file for each, but I don't bother with it too much. I just check if the period of time plane was available for that nation correspond with the data in data.ini file of the plane. I do that because some players put different data because they have info that that plane was earlier brought or later and forget to change the data accordingly in  userlist.ini file etc. If the data is different in data.ini file and the userlist.ini file then you will have a hard time asking yourself, why that plane, in the game's menu list won't appear in the year X or why the plane appears earlier in the list than it should, according to the data.ini data line etc

I see, thank you very much for the feedback!  I am still stuck on what I would want to do with the aircraft list.  If you were in my situation with the same goal,  what would you do?  

[UllyB 805]

I tell you what I did. I, too, like to have a lots of planes in my aircraft folder to make colorful and spicy enough any campaign I will play. The same goes for the single player missions where is a true delight to encounter, depending of year mission, a lot of different random planes in your way. In SF1 series , where i worked years to create and tweak them, then store them in aircraft folder, I had 300+ planes, each with its colorful paintjobs and weapons etc.

Here, in SF2 series, the job to make them , again, is time consuming as well but, having skill and experience (more than15 years of modding) I can advance quickly with my list of restored planes. First it would be a good idea to tweak , mod the existent ones (stock planes). After that you can add SF1 transformed planes or/and add-on aircraft created in SF2 section (see the download section for SF2 add-on planes). Also you have to keep an eye on your maps stored , they will give a clue of what planes you will need for them (on every map you know who is vs who according to conflicts history), so you can make it , in time, your priority. That's all in a nutshell. Good luck and feel free to ask for help if you are stuck, here, where, with very few exceptions , there is a community eager to help you chisel your own path. Don't be a stranger !

Edited March 24, 2021 by UllyB

[Wrench 8,517]

That is all far too much work, for far too little reward.

Just let the game engine handle it. That's how it was designed. The userlist ini for all the aircraft, and the limited nations & nations list in terrains it there for exactly that reason.

Why add more confusion? 

Also, nice to see you back again!!

[+daddyairplanes 6,519]

oks, as i read what you are trying to do( limit aircraft nations within an install), its the terrain that you need to adjust your inis in. particularly the (terrain name)_nations.ini.

using the Photorealistic UK terrain as an examle

[Theater]
TheaterName=British Isles
Location001=RAF
Location002=RANGE
Location003=Soviet
Location004=USAF

below is what you will want to play with to limit aircraft

[LimitedNationList]
FriendlyNation001=RAF
FriendlyNation002=RoyalNavy
FriendlyNation003=USMC
FriendlyNation004=USAF
FriendlyNation005=USN
FriendlyNation006=Airliner     <-------- i added this to allow my airliner mods at Heathrow
EnemyNation001=Soviet
EnemyNation002=RANGE

 

you can add or subtract nations as desired, just make sure you either use the NationName as it shows in the main nations ini, or create a new entry both in the main one and the terrain nations ini

but as Wrench said, renaming everything is a ridiculous amount of work, and has potential to screw up alot of mods if you were to release it. huge amount of work even if its not for release.

personally, i avoid the confusion by having the themed installs, but then only putting the relevant airframes in that instal. i dont need Japanese, Korean or Saudi Eagles in an Europe based install. dont even need Israeli, but those are stock birds with a fully merged 5+2 set up

good luck however you go with this

 

[UllyB 805]

46 minutes ago, daddyairplanes said:

o

 

[LimitedNationList]
FriendlyNation001=RAF
FriendlyNation002=RoyalNavy
FriendlyNation003=USMC
FriendlyNation004=USAF
FriendlyNation005=USN
FriendlyNation006=Airliner     <-------- i added this to allow my airliner mods at Heathrow
EnemyNation001=Soviet
EnemyNation002=RANGE

 

 

 

 

Can you, please, expand the explanation of your "airliners mod"  for me ? What's an "airliner" mode exactly  and how does it work ? I am interested. Could that be a syntax that allow civilian transport planes to appear in that war theater  ? Or have I gotten it all wrong ?

Edited March 24, 2021 by UllyB

[+daddyairplanes 6,519]

1 hour ago, UllyB said:

Can you, please, expand the explanation of your "airliners mod"  for me ? What's an "airliner" mode exactly  and how does it work ? I am interested. Could that be a syntax that allow civilian transport planes to appear in that war theater  ? Or have I gotten it all wrong ?

i added an airliner nation to the airliner skins that ive done (707, 757, DC-10 and a few others)

my original intent on that was to create a different formation so that multiple airliners were flying quite far apart in a line as it would be for a warzone reinforcement scenario like REFORGER.

still no nuetral party or civilians in SF2, so Airliner is listed as a blue nation for now, and any terrain i want my airliner skins to show up on the ramp in i have to add that entry.

my method is to skin by tga, with each airline being a serial number (000 Pan Am, 001 BOAC, 002 Lufthansa etc). so when the ini's allow, an airfield can a multitude of color on the ramp. im discussing a "Red Airliner" nation in another thread, but never got around to doing it mainly because of not working on Red airliner aircraft

old screenshot to illustrate

(all one skin on the ground)

 

i was just highlighting that particular one in my response as i went to pull the first terrain nations ini i got to as an example. the  first one i used just happened to have a nation i plugged in, showing what needs changed. but my airliner mods are just the big birds i've been painting up over the last few years, nothing more

 

 

[+guuruu 4,868]

47 minutes ago, daddyairplanes said:

i added an airliner nation to the airliner skins that ive done (707, 757, DC-10 and a few others)

And it was one of best ideas I saw in SF2 .

[UllyB 805]

Now I get it, You made a nation in nations.ini and then the randomizing engine for parked planes did the rest. Clever! I think I will take it. Thanks!

Edited March 24, 2021 by Wrench

[Eagle114th 483]

5 hours ago, Wrench said:

That is all far too much work, for far too little reward.

Just let the game engine handle it. That's how it was designed. The userlist ini for all the aircraft, and the limited nations & nations list in terrains it there for exactly that reason.

Why add more confusion? 

Also, nice to see you back again!!

Thank you for the feedback! it is good to see you again too! 

I see, that is starting to make sense.  Since there is no 'filter' system in the aircraft list on menu yet, I can play with the LimitedNationList in (terrain name)_nations.ini file, right?

With that, from now on, I can just go ahead install add-on aircraft that is meant to be installed as.  For example, If I see add-on that show as B-57_Pakistan, then I will install it in SF2 Middle East.  however, if I see add-on aircraft like MiG-21F with many nations skins with userlist, then I'll leave it the way it is. I would install it in a multi-SF2 installations that uses MiG-21F.  Whenever I am in a mood of flying specific nations, I would play with LimitedNationList as my current solution. 
 

5 hours ago, daddyairplanes said:

oks, as i read what you are trying to do( limit aircraft nations within an install), its the terrain that you need to adjust your inis in. particularly the (terrain name)_nations.ini.

using the Photorealistic UK terrain as an examle

[Theater]
TheaterName=British Isles
Location001=RAF
Location002=RANGE
Location003=Soviet
Location004=USAF

below is what you will want to play with to limit aircraft

[LimitedNationList]
FriendlyNation001=RAF
FriendlyNation002=RoyalNavy
FriendlyNation003=USMC
FriendlyNation004=USAF
FriendlyNation005=USN
FriendlyNation006=Airliner     <-------- i added this to allow my airliner mods at Heathrow
EnemyNation001=Soviet
EnemyNation002=RANGE

 

you can add or subtract nations as desired, just make sure you either use the NationName as it shows in the main nations ini, or create a new entry both in the main one and the terrain nations ini

but as Wrench said, renaming everything is a ridiculous amount of work, and has potential to screw up alot of mods if you were to release it. huge amount of work even if its not for release.

personally, i avoid the confusion by having the themed installs, but then only putting the relevant airframes in that instal. i dont need Japanese, Korean or Saudi Eagles in an Europe based install. dont even need Israeli, but those are stock birds with a fully merged 5+2 set up

good luck however you go with this

 

Your information and advice is much appreciated!  

I have a question:

By playing with "limited nation lists in terrains, I can filter any nations in aircraft list temporarily? 

For example, I want to see Czech only in aircraft list.  I would modify the LimitedNationList in (terrain name)_nations.ini file, then I would do this:

[LimitedNationList]
FriendlyNation001=Czechoslovakia
EnemyNation001=Soviet
EnemyNation002=RANGE

And if I want to see another nations, then I change the friendlyNations001 to another nation right?  This can be my current solution I can work with!  I will start SF2, see specific nations, and if I want to change to another nations, then I will shut down SF2, make a change to a file, and finally, start SF2 again.

I hope that TK eventually add the features on aircraft selection menu where I can filter to any specific nations quickly while having all available aircraft on the list.

[+daddyairplanes 6,519]

15 minutes ago, Eagle114th said:

And if I want to see another nations, then I change the friendlyNations001 to another nation right?  This can be my current solution I can work with!  I will start SF2, see specific nations, and if I want to change to another nations, then I will shut down SF2, make a change to a file, and finally, start SF2 again.

change Nation001 or just add another nation.

17 minutes ago, Eagle114th said:

I hope that TK eventually add the features on aircraft selection menu where I can filter to any specific nations quickly while having all available aircraft on the list.

not to be a kill joy, but i wouldnt hold my breath on that. no actual updates since 2013, and no talk of updates since the failed crowd fund attempt last year

 

another hint for what you are looking for would be within the code of campaigns. when starting a campaign, it has limits on aircraft based on what service you select; no RAF Tomcats in Desert Storm!  i dont know how that is managed, but realied that seems closer to what youre talking about

 

[+daddyairplanes 6,519]

1 hour ago, UllyB said:

Now I get it, You made a nation in nations.ini and then the randomizing engine for parked planes did the rest. Clever! I think I will take it. Thanks!

no worries, just 99.99 in the bribe .... i mean tip jar please (j/k)

[Eagle114th 483]

12 minutes ago, daddyairplanes said:

change Nation001 or just add another nation.

not to be a kill joy, but i wouldnt hold my breath on that. no actual updates since 2013, and no talk of updates since the failed crowd fund attempt last year

 

another hint for what you are looking for would be within the code of campaigns. when starting a campaign, it has limits on aircraft based on what service you select; no RAF Tomcats in Desert Storm!  i dont know how that is managed, but realied that seems closer to what youre talking about

 

Thank you for the clarification!  Looks like it is decided.  I will install the add-on mods normally (to save me the time and sanity) and play with the LimitedNationList in Terrain's nations.ini.

About TK, that is noted and understandable.  I can only hope that TK opens his eye eventually to the world of modding communities somehow.

By the way, about campaigns, that is interesting!  I will take a look into this. 

[Eagle114th 483]

Hello everyone,

I was experimenting one of terrains (Desert4) and edited DESERT4_NATIONS.INI.  I edited the codes, so I can only see USAF and Soviet aircraft in the list.  It is not working because I still see British and other nations' aircraft in a single mission screen.  I am trying to make it to only show USAF / Soviet aircraft in aircraft selection list.  Here is what my codes looks like in DESERT4_NATIONS:INI:

[Theater]
TheaterName=Somewhere in Middle East
Location001=Kingdom of Dhimar
Location002=Empire of Paran
Location003=British Protectorate of Sharnak
Location004=Straits of Dhimar
Location005=Diego Garcia

[Nation001]
NationID=256
Name=Dhimar
DisplayName=Royal Dhimari Air Force
Alignment=FRIENDLY
PilotNameList=NamesArabic.lst
RankList=RanksRAF.lst
CallsignList=CallsignsUS.lst
Formation.Fighter=USFighter
Formation.Attack=USFighter
Formation.Bomber=USBomber
Formation.Transport=USBomber
Formation.Tank=USTank
Formation.MobileAD=USAD
PilotTrainingStandard=EXCELLENT
GenderRatio=0
DebriefSuccessMusic=DebriefSuccess.wav
DebriefFailMusic=DebriefFail.wav
DebriefKilledMusic=DebriefKilled.wav
SpeechFile=USAFSpeech.cat
SpeechTextFile=USAFSpeechText.str

[Nation002]
NationID=257
Name=Paran
DisplayName=Parani Air Force
Alignment=ENEMY
PilotNameList=NamesArabic.lst
RankList=RanksRussian.lst
CallsignList=CallsignsUS.lst
Formation.Fighter=SovietFighter
Formation.Attack=SovietFighter
Formation.Bomber=SovietBomber
Formation.Transport=SovietBomber
Formation.Tank=SovietTank
Formation.MobileAD=SovietAD
PilotTrainingStandard=NORMAL
GenderRatio=0

[LimitedNationList]
FriendlyNation001=USAF
EnemyNation001=Soviet

Am I missing something? Originally, the codes looked like this:

[LimitedNationList]
FriendlyNation001=Dhimar
FriendlyNation002=USAF
FriendlyNation003=USN
FriendlyNation004=USMC
FriendlyNation005=Merc
FriendlyNation006=RAF
FriendlyNation007=RoyalNavy
EnemyNation001=Paran
EnemyNation002=Iraq
EnemyNation003=Libya
EnemyNation004=SOVIET

I changed it to this:
[LimitedNationList]
FriendlyNation001=USAF
EnemyNation004=Soviet

What is the next thing should I do? 

Edited March 26, 2021 by Eagle114th

[+Menrva 3,590]

16 minutes ago, Eagle114th said:

It is not working because I still see British and other nations' aircraft in a single mission screen.  I am trying to make it to only show USAF / Soviet aicraft in the list.

A terrain's nations file only has the purpose to limit which nations and relative aircraft the AI uses, it does NOT remove other nations from the selectable list. The only way to do what you want is to remove nation entries altogether from the main nations.ini file which must reside in the Flight folder. We've done this for the ODS mod we released this January. If you have a good bandwidth, try to download it and check how it works there.

[Eagle114th 483]

1 hour ago, Menrva said:

A terrain's nations file only has the purpose to limit which nations and relative aircraft the AI uses, it does NOT remove other nations from the selectable list. The only way to do what you want is to remove nation entries altogether from the main nations.ini file which must reside in the Flight folder. We've done this for the ODS mod we released this January. If you have a good bandwidth, try to download it and check how it works there.

Oh! I see, that makes sense.  Thank you for the information.   Right now I am installing ODS 30 years anniversary mod.

By the way, if there are no ways for me to be able to 'filter' the aircraft list in game, then I will go on an alternative plans;  Only re-name all aircraft.ini aircraft to have nations next to aircraft name.  Thanks to everyone here, it gave me a great idea.  What I'll do is just install the mods what it was meant to be installed as.  I won't divide up add-on aircraft folder with multi-nation's skin. I'll leave it be. 

I'll add name "Multi-Nations" next to aircraft name.  That way I will be well-informed that it have skins for multi-nations.  That way it won't be a very time-consuming customizing my mods. 

And even better, thanks to deep digging in how the menu and screen are set, I am inspired to make a new menu mods for SF2!  I was learning how to move the text around.  I am thinking about making an old Jane's style GUI for SF2!

UPDATE:  I noticed that ODS mod DID have a filter features on a campaign menu, just as Daddyairplanes have mentioned above. I am going to see if I can do similar things for a single mission when selecting Nation, then aircraft.

Edited March 26, 2021 by Eagle114th