Picture 3: heavy machine gun (HMG)
This picture has been updated (19/9/20) - I discovered the US paras (Revell) with their .30 Browning M1919A4 (bottom right); above that is Polish infantry (HAT) with a 7.92 mm wz.30; to their left Australian infantry (Revell) with a .303 Vickers; below them British infantry (Esci) also with a Vickers.
I added the bases to the Poles and Brits, and gave the latter an extra figure.
The problem with such weapons is the number of people needed - six to eight men when you include moving them and all the ammo they need.
Before discussing the SWA, straight onto
Picture 4: light machine gun (LMG, or GPMG - general purpose machine gun):
Clockwise from bottom left
Desert Rat (Airfix) with a Bren; US marine (Airfix) probably a Browning Automatic Rifle (BAR); Free French (Italeri) reloading a Bren; Australian infantry (Airfix) with a very small Bren!; German infantry and Afrika Korps (both Airfix) with MG42; Japanese infantry (Airfix) with type 96 LMG.
DISCUSSION
So, the SWA card says machine gun, but what does that mean? The picture on the token is an HMG (probably a Browning M2), but as mentioned above, that involves a big team. If the SWA is attached to an infantry unit, surely it is not an HMG?
Plus, the effective range of an HMG is 2000 metres; for an LMG it is 550 metres (the same as a rifle). That clearly makes a big difference to the game! But the battle rules for machine gun are the same as infantry (3,2,1).
So this SWA must be an LMG, which raises the question of why bother with a machine gun SWA? All infantry units woud have LMGs already.
Looking forward to your thoughts.