On August 25, 1971, the Canadian Government ratified a ten-year agreement with the British Government that allowed the British Armed Forces to use the northern three-quarters of the Suffield Block for armoured, infantry, and artillery live-fire training. On December 1, 1971, Canadian Forces Base Suffield (CFB Suffield) was officially created and allocated to Mobile Command. Over 160 staff members, 90 buildings, 80 vehicles, and the Crown Village of Ralston were transferred from Defence Research Establishment Suffield to the newly created base and CFB Suffield was co-located with the Research Establishment. By January 1972, the British Army Training Unit Suffield (BATUS) was established and the first live round was fired by a battlegroup from the 4th Royal Tank Regiment (4th RTR) on July 15, 1972.