The Great War.. The game has units from a lot of countries. It's cool to see the colours of a lot of countries at the same time in the battlefield fighting alongside or against. Also, I love those modern artillery, machine guns and TANKS!
There should be poison gas attacks by artillery in the game. Gas attacks were a common part of the war. The mechanics can be like using LP to order an artillery to use gas canisters. When the artillery fires at a unit it causes them to lose a lot of units first and then create a 3×3 zone of the poison gas which will stay there for like 2-4 turns. It will affect any unit, ally or enemy who goes in it during the turns.