Although the Cannon & Limber was the basic operating unit, other wagons/vehicles were required in support of an artillery battery.

Caisson and Limber

The caisson is intended to transport ammunition, and carries two chests like that on the limber. It has a stock like that on the gun carriage, terminating in a lunette, so that it can be hooked to a limber for transportation. A caisson with its limber thus held three ammunition chests, which with the chest on the limber hauling the gun carriage would make four in all, taking the theoretical total ammunition for a 6-pounder up to 200 rounds; or 128 rounds for a 12-pounder.
At least one caisson was assigned to every cannon. The caisson also transported a spare wheel and pole, and some tools

Battery Wagon

Equipments and supplies for the battery were carried in the battery wagon, a long bodied cart with a rounded top. In the wagon, and its associated limber, there were over 125 different items, including:
carpenter's and sadler's tools, oil, paint, spokes, harness, axes, spades, tarpaulins, spare gunner's implements, amd also forage for the horses in the rack on the back.

Traveling Forge

Iron work repairs and horseshoeing were made possible by the traveling forge attached to each battery. The forge and its limber carried blacksmith's tools, horseshoes, nails, hardware, and other spare items.

Each battery had only one wagon and one forge, and they were expected to accompany the battery wherever it went.