Westfalen Garrison is a major British garrison with facilities located in Paderborn, Sennelager and Gütersloh in North Rhine-Westphalia, Germany which now forms the major part of British Forces Germany. It was the home of 20th Armoured Brigade and most of its subordinate units. Headquarters Westfalen Garrison is based at Antwerp Barracks in Sennelager.

Paderborn is a city in eastern North Rhine-Westphalia, Germany, capital of the Paderborn district. The name of the city derives from the river Pader and Born, an old German term for the source of a river. The river Pader originates in more than 200 springs near Paderborn Cathedral, where St. Liborius is buried.