Footgear and caps clearly point towards Serbian troops, which would be great to fill an important gap in the market (the Coates & Shine / HäT set suffers from poor sculpting). I think the same figures could be used for WW2.
They are wisely dressed in coates and hide their ammo pouches, so lots of conversion possibilities (WW2 Greeks anybody?)!
As there are enough Adrian helmets already, I would prefer having as many as possible in the traditional serb sajkaca cap. These men were not spoilt with automatic guns, so one light machine gun pose would be enough for me.