Waterloo 1815 1/72nd scale USMC WWII .30 cal air cooled light machine gun. The machine gun looks backwards, and while the machine gun can be traversed 360 degrees, the normal method of firing is with the rear of the gun between the two legs and the barrel over the single leg.
The machine gun crew together. I would probably add the officer figure with the LMG crew, and use him as the gun leader / spotter. A three man crew is really a minimum on these guns, in fact, they often used many more men to carry ammo, a light machine gun can just eat up bullets.