Use this thread for unit suggestions.
Note that at this moment, all pre-Great War (WW1) period units are used by all regions.
At Great War (WW1) period onwards, units are currently split into Europe and Americas regions in the Mech (Tanks, Androids) and Aircraft (Fighters, Bombers, Helicopters) categories.
Future regions include: Asia (including Russian units) and African (including Middle East units). Ships and Artillery will also be split up.
Earlier eras may also be split up in future.