I am looking to play the Great War in 1-1 at 3mm, with each base being a section. From what I understand, the number of men in a section changed throughout the war (and I have seen arguments that commanders did not think in terms of sections at the time) but I am aiming for between 8 to 12 models per base (4cm by 2cm). I am planning late war French vs Germans, and would also like at some point to do Germans or Austro-Hungarians vs Russians in 1914.
Any suggestions? I am unsure if any single ruleset could cover 1914 eastern front and 1918 western front so happy with suggestions which only cover one of those two.