Oshkosh Corporation (NYSE: OSK) is an American industrial technology company headquartered in Oshkosh, Wisconsin, that designs, manufactures and services specialty trucks, military vehicles, fire and emergency apparatus and access equipment. Founded in 1917 as the Wisconsin Duplex Auto Company, it operates through the Access, Defense, Fire & Emergency and Vocational segments via brands including JLG Industries, Pierce Manufacturing, Oshkosh Defense and McNeilus. It employs roughly 18,000 people across more than 130 facilities in 24 countries.