A Challenger 2 Main Battle Tank of the Royal Welsh Battle Group on Exercise Prairie Storm at the British Army Training Unit Suffield (BATUS) in Canada.The prairie of Alberta has provided an excellent opportunity for the British Army to train on a large scale since 1972. The British Army Training Unit Suffield (BATUS) is an organisation situated on one of the most sparsely populated areas of the Alberta plain.BATUS is equipped with in excess of 1000 vehicles including a full complement of Challenger 2 tanks and Warrior Infantry Fighting Vehicles. Each year a Regiment is sent there for six months to take the part of the 'enemy' for the other Regiments that are there to train each year.