Abstract: The paper describes how electric drives and hybrid-electric drives are being applied to military combat vehicles and discusses the advantages (and disadvantages) of their use in both tracked vehicles and multi-wheel vehicles. Details are then given of a number of demonstration vehicles which have been developed using this technology. Vehicles employing hybrid-electric drives are seen to be of particular importance in the modern battlefield. It is concluded that electric drives will play an increasing role in future vehicles and that it will be difficult to meet some design and operational requirements without them.