I remember reading from some book (can't remember which one) that when WW2 began, the AA troops of various countries were actually less good at their work and achieved weaker results than their predecessors in the final year of the Great War. Radars were not yet available in large numbers, and proximity fuzes (one of the most important technologies of WW2) were still on the drawing board, so the AA units had to work with equipment that was not dramatically different from or better than what was in use in 1918. As most men didn't have any combat experience, they had to learn again many of the things that their predecessors in WW1 had mastered and put to good use.
I became interested in naval fire control systems when I bought Jutland from Storm Eagle Studios, and I can recommend the link Bullethead posted for anybody who shares the interest. I didn't know much about AA fire control systems of WW1, but now I've learned a thing or two from this thread. And dnce again I was surprised by just how advanced many technologies already were in WW1. That conflict took place in a period of history that saw technology develop faster than ever before. If there has been something positive about the two world wars, it must be their dramatic impact on technological progress.