Catterick Garrison is a major garrison and military town 3 miles (5 km) south of Richmond, North Yorkshire, England. It is the largest British Army garrison in the world, with a population of around 13,000 in 2017 and covering over 2,400 acres (about 10 km2). Under plans announced by the Ministry of Defence (MoD) in November 2005, its population is expected to grow to over 25,000, making it the largest population centre in the local area. From Wikipedia