Albert C. Manucy, Artillery Through the Ages
“ Loading technique varied with the gun, but the following summary of drill from the United States Heavy Ordnance Manual of 1861 gives a fair idea of how the crew handled a siege gun:In the first place, consider that the equipment is all in its proper place. The gun is on a two-wheeled siege carriage, and is "in battery," or pushed forward on the platform until the muzzle is in the earthwork embrasure. On each side of the gun are three handspikes, leaning against the parapet. On the right of the gun a sponge and a rammer are laid on a prop, about 6 feet away from the carriage. ”
