Picture and unit it's intended to replace:

37mm inf gun = unit 144

barge = unit 247 (it's a Ramped Cargo Lighter to be exact)

ba64 = unit 010

fiat 665NM = armoured truck requested in OP

l3 tankette = additional photo if needed, this one's better than the one I posted earlier

yugo partisans advancing 1/2 = for sappers, scouts etc.

yugo 7.5cm PaK = unit 024

yugo royal army ft-17 = unit 001

yugo zis truck = requested in OP

yugo HQ 1945 = unit 245