The Defence Batteries were units of the Royal Artillery created for beach defence during World War II when the United Kingdom was threatened with invasion after the Dunkirk evacuation. Once they had served their purpose they were disbanded or converted into units of field artillery.
Later, as the Home Defence strategy developed, the Royal Artillery formed a number of 'Defence Batteries' to deploy around the coastline for general beach defence. These were not part of the fixed defences of the RA's Coast Artillery branch covering the ports (although it had long been the practice for garrison artillery units to be equipped with a handful of mobile guns, in addition to their primary fixed guns, for similar usage), nor were they included in the field forces under Commander-in-Chief, Home Forces, but equipped with whatever old direct-fire guns were available they freed up scarce field artillery from semi-static beach defence for the mobile counter-attack forces. Most of these batteries were formed on 1 September 1940.[3][4][5]
By the beginning of 1942 the imminent threat of invasion had passed, the coast artillery batteries were fully established, and the RA required gunners for the field forces. The remaining defence regiments and independent batteries in the UK were disbanded or converted into field artillery on 12 January 1942:[5][7]
12th Defence Rgt disbanded, personnel of 956 Def Bty to 172nd Field Rgt
14th Defence Rgt with personnel of 958 (Ind) Def Bty became 177th Field Rgt
Most of these new field regiments served in reserve or holding formations, training reinforcements for units serving in active theatres, though 172nd Field Rgt did serve through the Tunisian and Italian campaigns,[8] and 177th Field Rgt was used to reform the Regular Army's 25th Field Rgt, which had been captured at the Fall of Tobruk.[5]
A number of defence batteries and regiments were also formed during the war in British overseas garrisons:[5][7]
16th Defence Regiment, Royal Artillery, formed in Singapore on 24 February 1941 from 10th Mobile Coast Rgt. It was captured by the Japanese at the Fall of Singapore on 15 February 1942.[9][10][11]
966 Def Bty (18-pounder guns) – converted from 30 Mobile Coast Bty (or 34 Coast Bty?), Hong Kong–Singapore Royal Artillery (HKSRA)
967 Def Bty, HKSRA (18-pounder guns) – converted from 21 Mobile Coast Bty, RA
968 Def Bty, HKSRA (2-pounder guns)– converted from 22 Mobile Coast Bty, HKSRA
17th Defence Regiment, Royal Artillery, formed in Malta on 24 February 1941 from 13th Mobile Coast Rgt (itself converted from 26th Anti-Tank Rgt on 3 September 1939). As Regular Army units, the batteries retained their existing numbers on conversion rather than take the defence battery numbers (969–72) reserved for them, and on 29 June 1941 the regiment was itself redesignated as 26th Defence Rgt. It served through the Siege of Malta and then on 18 September 1943 was converted into 26th Medium Rgt for service in the Italian Campaign.[12][13][14][15][16][17][18]
15 Def Bty – 15/40 Def Bty from 22 August 1941
40 Def Bty
48 Def Bty – 48/71 Def Bty from 22 August 1941
71 Def Bty
13 Def Bty, Royal Malta Artillery (RMA) – formed and joined 22 August 1941; transferred to 5th Coast Rgt, RMA, 1 June 1942
18th Defence Regiment, Royal Artillery, formed in Gibraltar as a Mobile Coast Rgt on 1 December 1940 with one field, one medium and one anti-tank battery, and redesignated 18th Def Rgt on 1 April 1941. Regimental Headquarters (RHQ) became RHQ 18th Medium Rgt on 5 January 1944 and the batteries were disbanded on 5 March 1944. 18th Medium Rgt later served in the Italian Campaign.[13][16][19]
973 Def Bty – converted from field bty
974 Def Bty – converted from medium bty
975 Def Bty – converted from anti-tank bty
805th Defence Regiment, Royal Artillery, was formed in Middle East Forces on 25 October 1943 and disbanded on 30 November 1943[17]
A & B Field Btys
In addition, 965 Defence Bty, converted from 36 Heavy Bty, HKSRA, and equipped with 18-pdr and 2-pdr guns, served as part of the mobile coast defences of Hong Kong and was captured by the Japanese at the Fall of Hong Kong on 25 December 1941.[9][10][20]
Gen Sir Martin Farndale, History of the Royal Regiment of Artillery: The Years of Defeat: Europe and North Africa, 1939–1941, Woolwich: Royal Artillery Institution, 1988/London: Brasseys, 1996, ISBN 1-85753-080-2.
Gen Sir Martin Farndale, History of the Royal Regiment of Artillery: The Far East Theatre 1939–1946, London: Brasseys, 2002, ISBN 1-85753-302-X.
J.B.M. Frederick, Lineage Book of British Land Forces 1660–1978, Vol II, Wakefield: Microform Academic, 1984, ISBN 1-85117-009-X.
Lt-Col H.F. Joslen, Orders of Battle, United Kingdom and Colonial Formations and Units in the Second World War, 1939–1945, London: HM Stationery Office, 1960/Uckfield: Naval & Military Press, 2003, ISBN 1-843424-74-6.
Denis Rollo, The Guns and Gunners of Malta, Valetta: Mondial, 1999, ISBN 99909-68-84-5.
Lt-Col J.D. Sainsbury, The Hertfordshire Yeomanry Regiments, Royal Artillery, Part 1: The Field Regiments 1920-1946, Welwyn: Hertfordshire Yeomanry and Artillery Trust/Hart Books, 1999, ISBN 0-948527-05-6.
