Britain had a small but highly effective artillery arm (the Royal Artillery) that was exceedingly well trained but suffered from having only light guns. British cannon barrels were made of brass, with the carriages, wheels, and timbers painted grey and metal pieces painted black. The basic guns were from three to six pounders, and the British found themselves at a distinct disadvantage against French cannon. In fact, the Duke of Wellington forbade his gunners to engage in counter-battery fire against the superior French weapons and ordered them to focus on firing at enemy troops. The artillery was divided in horse artillery and foot artillery. Each cannon was manned by five gunners.