The limbers, caissons, and gun carriages were all constructed of oak. In addition, the Union Army seized 40 cannons and 69 limbers and caissons. Normally these guns were towed without a limber but some 17-pounders were towed with limbers. The design, as patented, consists of nine fixed barrels attached to a limbers and caissons. The vigorous French pursuit also seized a bridging train plus 200 limbers and ammunition wagons. In 1889 these guns were replaced by two 9-pounder guns, complete with limbers and wagons. Gunners rode into action while sitting on the limbers rather than walking beside the guns. Siege artillery limbers, unlike field artillery limbers, did not have an ammunition chest. By then the wheels were significantly rotted and the ammunition limbers had become unserviceable. Occasionally, two limbers were towed to increase the ammunition supply. These were smooth-bore, heavy, cast artillery pieces moved by limbers, usually at a slow pace. A total of 269 Mk 2 Stalwart limbers were produced. Trish and Patsy leave to go to Limbers department store. The shafts of a carriage were called "limbers" in English dialect. Many armies retained limbers seemingly from sheer inertia.