il-2 have only conventional army but in realty in ww2 american use illegal army EXAMPLE mustard gas BOMBs yes i remember
http://en.wikipedia.org/wiki/Air_Raid_on_Bari
i not see the difference from 100.000.000 convetional bombs and one 1 nuke bomb the difference is the quantity.
WE must also admit that to build one nuclear bomb it took a lot of money scientists and plutonium.
difficulties' huge during ww2.