My 3 cents, mostly concerning pictures:
001 FT-17 - armament was probably standard WW1 8mm Hotchkiss, not FM31
005 M.28 - it had a different suspension, than FT-17 - like this:
http://www.aviarmor.net/tww2/tanks/f...enault_m24.htm, so it could have a new picture
018 45L66 AT-Gun - picture of a long barrel version is 29366
021 65mm Mtn Gun - I don't know which gun it is, but a photo is used for Russian 76 mm FG - more appropriate for a mountain gun is eg. 23043
030 2x120mm Mortars - picture 56 is generic 82mm mortar. For 120mm, 13183 is used.
054 75mm Inf Gun - I don't know Yugoslavian artillery, but Chamberlain's Light and Medium Field Artillery credits Yugoslavia with several models of 76 mm Skoda guns, known there as 80 mm guns, so maybe it should be this caliber.
The picture is very similar to M.5/8 gun, which had a rage of 7 km, so a range of 152 of weapon #34 would roughly fit.
The weapon 34 is marked as 75mm M1928, but M.28 was a Yugoslavian modern 76mm Skoda field gun, with a range of 13.1 km (unless there were other M.28 guns). So maybe it should be M.5/8 gun?
056 122mm Howitzer (M.10/30) - picture is 122 mm cannon - correct is 23182 (used in Soviet OOB).
But maybe this unit should be rather Soviet newer standard M-30 howitzer? (Soviet unit 370, but with a split tail icon, eg.59, like in German oob)
Same for #67 122mm Platoon
057 37mm AA-Gun - picture should be Soviet 37 mm, eg. 23077
064 85mm AT-Gun - I don't think, that newest Russian gun (commissioned in 1946) was used in Yugoslavia. It isn't even available in Russian OOB. Besides, picture is 122mm howitzer.
069 GAZ-AA-37 - correct picture is 29355 or 27520
071 20mm AA Gun - is it Italian Breda? If so, a picture should be eg. 30150 - now it's German flak.
073 M3A1 Stuart - picture is M3A3
077 RPG Team - picture is Bazooka. For RPG-6, 351 is used.
078 AOP Light Truck - eg. 30257 is more appropriate for pre-war light truck
123,124,289,290 Partisan AT - picture is a Barricade with some firearm, and could be replaced eg. with 14033 - standard for other Partisan AT here.
133,134 76mm Field Gun - Skoda FG, picture is used for Russian Putilov. Correct picture for M.5/8 Skoda gun (or very similar) is 20070.
According to Chamberlain, it was known in Yugoslavia as 80 mm gun.
143 47mm AT-Gun - photo is German 37 mm. If it is Czechoslovak gun, that it can be 22211
165 75mm Pack Hwtzr - since it is used from 3/44, isn't it US M1 howitzer? Then, correct pic is 32150, icon = 2111 (single-tail), range should be 164 like in US oob (178)
272 Do 17K - picture is Do 217, better is 25578
Michal