Oshkosh Defense home page.

Next-generation solutions for mobility, reliability, and lethality.

Oshkosh Defense is a full-service partner throughout the entirety of the product lifecycle – from purchase, to maintenance, training, and everything in between.

Oshkosh Defense aftermarket services team working with troops.

Designing the future of delivery and fleet vehicles.

Oshkosh Defense USPS delivery vehicle.

Innovating solutions to solve complex problems in the military and delivery vehicle markets

Oshkosh Defense engineers looking at a computer screen.

Enabling those who dedicate their lives to service to accomplish their mission and return home safely.

Oshkosh Defense logo on the front of a military vehicle.

Get the latest on Oshkosh Defense contracts, technological advancements, company initiatives, and more — directly from our team.

Oshkosh Defense family of military vehicles in a row.


Providing critical vehicle support near your mission field. Whether you’re in the rugged terrains of combat zones or your home post, we’re here to help you maintain peak operational readiness. Our field service teams travel to wherever your fleet and mission take you to provide hands-on support.


Our third-party service provider network (SPN) consists of more than 130 dedicated service providers across the United States, Europe, and the Middle East. Each service provider facility has a Master Certified Technician on call who’s been trained by our team to service all Oshkosh Defense vehicles. 

Oshkosh Defense Field service support map.

Field Service Representatives

Trained field service representatives (FSRs) are on call whenever you need us. FSRs are stationed around the globe — including alongside domestic and international military units. Oshkosh Defense FSRs have direct access to engineers and are trained to provide the highest level of maintenance, diagnostics, technical assistance, and hands-on training to your team.

Oshkosh Defense field servic representatives.


In addition to on-site support, we also offer ongoing warranty support through One Warranty, an enterprise-wide warranty system. This system is used to manage all warranty transactions for Oshkosh Defense products for quick and efficient resolution and replacement parts.