| United Kingdom|
| Rear-Admiral John de Robeck|
The Auxiliary Patrol was an antisubmarine patrols initiative by the British to help combat German submarine operations in the early stages of World War I. It was under the command of the Admiral of Patrols at the Admiralty and was the pioneer of anti-submarine warfare.
Auxiliary Patrol Wikipedia
On May 1st 1912 the post of Admiral of Patrols was established responsible for five destroyer flotilla's covering waters around the British Isles. In 1914, the Board of Admiralty sent an order the Admiralty War Staff to re-evaluate the functional role the patrol flotillas off the Eastern Coast of Britain the First Sea Lord indicated that the current function of patrolling would now be that of coastal defence. After the implementation took place R Admiral de Robeck was then replaced as (ADMOP) by a new commander Commodore George A. Ballard. He assumed the duties of Admiral of Patrols on the 1 May, 1914 the auxiliary patrol was then a component part of the Admiral of Patrols command until 1917.
The majority of British trawlers were commandeered by the Admiralty, and those left were obliged to fish in groups of 20 with additional protection.
The Auxiliary Patrol was crewed by fishermen and led mainly by Merchant Navy men commissioned into the Royal Naval Reserve. They operated as trawlers do, in all weathers. Their trawlers were retrofitted with armaments, typically 3,6 or 12-pounder guns as well as 7.5" Bomb Throwers (Anti Submarine howitzers). Specialist crew such as signallers and gunners were also put on board.
Later in the war the Admiralty built 3 classes of larger trawlers as well as developing a new special class of Minesweeper.
By the Second World War, the Royal Navy had formed a specialist minesweeping capability, and the Royal Naval Patrol Service was formed, known to many as "Harry Tate's Navy".
In 1914 new patrol areas were designated "Auxiliary" that covered UK waters.Auxiliary Patrol Areas I—Stornoway
Auxiliary Patrol Areas II—Shetlands
Auxiliary Patrol Areas III—Orkneys
Auxiliary Patrol Area IV—Cromarty, Moray Firth
Auxiliary Patrol, Area V—Peterhead
Auxiliary Patrol Area VI—Granton
Auxiliary Patrol Area VII—Granton
Auxiliary Patrol Area VIII—Tyne
Auxiliary Patrol Area IX—Humber
Auxiliary Patrol Area X—Yarmouth, Harwich local area, Nore local area
Auxiliary Patrol Area XI—Dover and the Downs
Auxiliary Patrol Area XII—Portsmouth
Auxiliary Patrol Area XIII—Portland
Auxiliary Patrol Area XIV—Plymouth, Falmouth, Bristol Channel area
Auxiliary Patrol Area XV—Milford Haven
Auxiliary Patrol Area XVI—Kingston, Liverpool local area
Auxiliary Patrol Area XVII—Lough Lame, Clyde local area–(North Coast of Ireland)
Auxiliary Patrol Area XVIII—Lough Swilly
Auxiliary Patrol Area XIX—Killybegs
Auxiliary Patrol Area XX—Galway Bay
Auxiliary Patrol Area XXI—Queenstown
Auxiliary Patrol Area XXII—Holyhead
Auxiliary Patrol Area XXIII–(?)
Nore Auxiliary Patrol Area–(covering east of London and the mouth of the Nore)
Harwich Auxiliary Patrol Area–(covering north of the Nore and off the coast of Harwich)
Bristol Auxiliary Patrol Area–(covering the Bristol Channel)
Mersey Auxiliary Patrol Area–(covering off mouth of the river Mersey)
Clyde Auxiliary Patrol Area–(covering the mouth of the river Clyde)
The Mediterranean Sea was divided into patrol zones dividing responsibility between the British, French and Italian navies.Auxiliary Patrol Area 1 (Mediterranean west)
Auxiliary Patrol Area 5 (Mediterranean central)
Auxiliary Patrol Area 8 (Aegean sea)
Auxiliary Patrol Area 10 (East Mediterranean south of Crete, to the coast of Egypt)
Auxiliary Patrol Area 2 (Oran, east of and west of Sardinia and Corsica)
Auxiliary Patrol Area 4 (Tunisia, eastern coast)
Auxiliary Patrol Area 7 (Greece, Southwest)
Auxiliary Patrol Area 9 (East Mediterranean)
Auxiliary Patrol Area 3, (Tyrrhenian Sea)
Auxiliary Patrol Area 6, (Adriatic sea)
Auxiliary Patrol Area 11, (Gulf of Sidra)