If you hang around in WWI circles long enough, sooner or later the name "Biggles" will come up. "Biggles" (Bigglesworth) was the creation of Capt.W.E.Johns (himself a WWI pilot). Starting around 1932, Johns embarked on a project that would last his lifetime: taking the story of his hero through WWI, the inter-war years, and through WWII. These books were, admittedly, adolescent reading, but a good cut above the rest of the field. The standard narrative usually went something like (1) two young stalwarts, Frank and Jack (2) inadvertently find themselves posted to a place which is about to erupt into a slaughter of historical proportions, e.g., The Somme,The Battle of Jutland, or Bloody April. (3) They soldier on manfully, rarely garnering so much as a scratch, (4) defeating scads of Huns, (5) all the while spouting patriotic nonsense.
Biggles is more of a well-rounded character; one who is heroic only reluctantly and respects the German pilots. Biggles often experiences real fear. This is undoubtedly because W.E.Johns wrote from his own experiences. Over his lifetime, Johns wrote 102 Biggles novels.(made it through WWII) He died in 1968.
Amazon.com has a goodly sampling of the Biggles books. I just finished reading the first, "Biggles Learns To Fly".