Caterpillar are well known for supplying diesel engines for the civilian market, but in recent years have made significant inroads into the military market with their 3116 series engines being installed in the Stewart & Stevenson Family of Medium Tactical Vehicles in service in large numbers with the US Army.

The Caterpillar 3126B diesel engine is installed in the Diesel Division, General Motors of Canada, Light Armoured Vehicle Category III vehicles now in service with the Canadian Army.

The first application being the Kodiak armoured personnel carrier of which up to 651 are expected to be procured. In this application the Caterpillar 3126B engine is coupled to an Allison MD 3066 P fully automatic transmission.

The Light Armoured Vehicle Category III vehicle is the Swiss MOWAG Piranha manufactured under license in Canada. Until recently, all production Canadian built MOWAG Piranha vehicles have been powered by Detroit Diesel engines coupled to an Allison automatic transmission.