Well I suppose the 2 kneeling poses would be at the gun & theres obviously the guy grabbing shells, plus the guy bringing what I assume to be a crate of more shells. The guy just standing there seems a bit odd, even if he was an officer he should be a bit more animated.
The figure that really seems a bit odd for a gun crew is the chap with the stick grenade. Not sure why you would expose yourself to chuck one those when you are with a perfectly useable AT gun!! But he still works as a generic grenade thrower.

Nice to see 4 guns in a box too!

I hope it comes with shields as the box art shows

Hello, image provided by strelets in July I think...