Oshkosh Corporation, formerly Oshkosh Truck, is an American industrial company that designs and builds specialty trucks, military vehicles, truck bodies, airport fire apparatus, and access equipment. The corporation also owns Pierce Manufacturing, a fire apparatus manufacturer in Appleton, Wisconsin, and JLG Industries, a manufacturer of lift equipment, including aerial lifts, boom lifts, scissor lifts, telehandlers and low-level access lifts.

Pierce Manufacturing is a U.S. company based in Appleton, Wisconsin that manufactures customized fire and rescue apparatus. A wholly owned subsidiary of Oshkosh Corporation, Pierce was acquired in 1996. It is currently one of the largest fire apparatus company in the US. The company was founded in 1913 by Humphrey Pierce and his son Dudley as the Pierce Auto Body Works Inc., and concentrated on building custom truck bodies for the Ford Model T. The first production facility was designed in 1917 and enlarged in 1918 by architect Wallace W. DeLong. From the 1960s to the early 1980s, Pierce was primarily known for building custom bodies on commercial and other manufacturer's custom chassis, and was considered an original equipment manufacturer (OEM).