[Cannoneer No. 4]

D/319th AFAR

[Darksheare]

That's an M119A1 alright.
That box next to the wheel is the sightbox for the pantel, which the gunner is next to there in pic.
They're also set up in a firebase style position, the guns in a diamond pattern.
Cripes that bring back memories of being at Fort Drum with our moat.. err. .trench.
(Ft Drum has areas that act like mud sponges. We dug in, and had a frog filled moat instead of a trench.)

Note the handrail on the lower right hand corner of image that the one soldier, probably the #1 man, is sitting on.
Looks like they're setting up and looking at the aiming circle.