Oshkosh Defense

Oshkosh Defense is the military vehicle arm of Oshkosh Corporation, a company that started in 1917 as the Wisconsin Duplex Auto Company building specialized four-wheel-drive trucks and has kept a foothold in heavy-duty vehicle manufacturing ever since. The defense unit sits alongside Oshkosh's commercial businesses, which include fire apparatus, access equipment, and, notably, the US Postal Service's next-generation delivery vehicle, giving the parent company a vehicle-engineering base that spans well beyond the military. Within defense, Oshkosh's product line spans the weight classes the Army and Marine Corps need. At the light end, it builds the Joint Light Tactical Vehicle, developed to replace much of the aging Humvee fleet with a design that better balances protection, payload, and mobility, along with the earlier L-ATV variant that won the JLTV competition.

In the medium category it produces the Family of Medium Tactical Vehicles, now in its A2 generation, workhorse trucks used across the Army for cargo and troop transport. At the heavy end sits the Heavy Expanded Mobility Tactical Truck, the Heavy Equipment Transporter, the Logistics Vehicle System Replacement built for the Marine Corps, and the Palletized Load System, all vehicles designed to move fuel, ammunition, and equipment across difficult terrain at scale. The company also built the M-ATV, a lighter mine-resistant ambush-protected vehicle developed during the Afghanistan war for better off-road mobility than earlier MRAP designs, and it produces the P-19R aircraft rescue and firefighting vehicle used on military airfields. Looking forward, Oshkosh has been developing the Robotic Combat Vehicle under Army experimentation programs aimed at fielding uncrewed ground platforms alongside crewed formations, part of a broader industry push toward optionally manned and autonomous vehicles.

The defense business also runs a substantial aftermarket operation, supplying parts, field service support, training, and full life-cycle sustainment contracts that keep its vehicle fleets running for decades after initial fielding, which is a meaningful share of its revenue given how long tactical trucks stay in service. Oshkosh Corporation as a whole employs around 15,000 people across roughly 130 facilities in two dozen countries, trades on the New York Stock Exchange under ticker OSK, and is headquartered in Oshkosh, Wisconsin, the city that gave the company its name.