The oldest part of Paderborn Garrison was Neuhaus at Paderborn which dates back to 1370 and which became Horrocks Barracks after the Second World War. The main part of Paderborn Garrison has its origins in the Infantrie Kaserne, which was built in the early 20th century on Elsenerstrasse, and the Panzer Kaserne, which were built in the 1930s on Driburgerstrasse, and which went on, after the War, to become Alanbrooke Barracks and Barker Barracks respectively. Linsingen Kaserne was built in Hamelin in the 1930s; this went on to be Gordon Barracks. Meanwhile, at Herford, Estorff Kaserne and Stobbe Kaserne were built in 1934: these went on, after the war, to become Hammersmith Barracks and Wentworth Barracks respectively. Also at Herford Otto Weddigen Kaserne was built around the same time: this became Harewood Barracks. Additional barracks that were established at Sennelager, a city quarter of Paderborn, also became part of Paderborn Garrison. Gütersloh Garrison had its origins in two Royal Air Force stations: RAF Sundern which was handed over by the Royal Air Force to the British Army as Mansergh Barracks in 1961 and RAF Gütersloh which was handed over by the Royal Air Force as Princess Royal Barracks in 1993. The present garrison was created, in accordance with the Ministry of Defence's Army Basing Programme, when Paderborn Garrison and Gütersloh Garrison merged to form a new "super-garrison" named Westfalen Garrison on 1 April 2014. Hameln Station was handed back in November 2014 and Herford Station was handed back, once 1st Armoured Division had changed role and then moved to York, in June 2015. Facilities under the garrison's control include the Sennelager Training Area.
Alanbrooke Barracks, named after Field Marshal Viscount Alanbrooke,, was the home of 33rd Armoured Brigade through the 1980s until it merged with 20th Armoured Brigade in 1992. Having served as an infantry barracks throughout the 1990s, it was home to 5th Battalion The Rifles between 2001 and September 2016.
Antwerp Barracks, named after the City of Antwerp which was captured by the British Second Army in 1944, former home to the 20th Armoured Brigade since 2001.
Athlone Barracks, named after Major-General the Earl of Athlone, having served as a cavalry barracks since the 1950s, has been home to Queen's Royal Hussars since 1998.
Normandy Barracks, has been home to various minor organisational units and is currently home to the Personnel Recovery Centre.
Hameln Station :
Gordon Barracks, named after Major-General Charles Gordon, having served as an engineer barracks since 1950, was home to 28 Engineer Regiment from 1992 until it closed in 2014.
Princess Royal Barracks, named after Princess Anne, was home to 102 Logistic Brigade from when the facility was handed over by the Royal Air Force in 1993 until it closed in 2016.
Harewood Barracks, named after the Harewood Estate in West Yorkshire, having served as a cavalry and tank regiment barracks since 1955, was home to 9th/12th Royal Lancers from 1992 until it closed in 1994.
Wentworth Barracks, named after the Wentworth Estate in Surrey, was home to 1st Armoured Division from 1993 until it closed in 2015.