Cannon and Caisson

The gun and the caisson were set up side by side.

The ammo was right next to the gun for quick firing.

The recoil mechanism allowed the gun to stay in place when fired, so it did not need to be relaid after every shot.

Makes a nice little set up.

Of course in fixed positions the ammo would be in a dugout and the caisson would be used to replenish the store.