Navistar Defense used the chassis of the Navistar International's WorkStar chassis to build the Navistar 7000 series of military heavy vehicles. The truck is available in a variety of configurations (4×2, 4×4, 6×4, and 6×6) and engine types
The US Army ordered 2,900 of the Navistar 7000 trucks in 2007 for the Afghan National Army and the Iraqi Ministry of Defense. The US Army ordered an additional 7,000 vehicles the following year.
In fulfillment of MSVS MilCOTS (Militarized Commercial-Off-The-Shelf) requirement, the Canadian Army adopted the Navistar Defence LLC Medium Logistics truck. Starting in June 2010, 1,300 Navistar MSVS SMP (Standard Military Pattern) began replacing part of Canadian Army fleet of vehicles
In July 2012, however, Canada cancelled its order for 1500 MSVS SMP. In July 2015, Canada awarded the SMP contract to Mack Trucks instead. Mack began delivering Kerax-series trucks in 2017.
Current 7000-series military deployment include:
Afghan National Army
Afghan National Police
Bulgarian Air Force — 1+ Navistar 7000-MV in service in fuel tanker configuration at Graf Ignatievo Air Base.
Canadian Army Reserve — 1,300 Navistar 7400 SFA in service.
Colombian Marine Corps — 47+ Navistar 7000-MV in service.
Colombian Navy — 8 donated by the US in November 2017.[
Iraqi Armed Forces — 115 Navistar 7000-MV on order in addition to unknown number in service.
Military equipment of ISIL — 124+ captured from Iraqi security forces per 2014, at least 7 destroyed, unknown number in service.
Republic of China Army
Republic of China Marine Corps