| Auxiliary Patrol | |
|---|---|
| Active | 1914–1919 |
| Country |  United Kingdom |
| Branch |  Royal Navy |
| Type | Fleet |
| Commanders | |
| Notable commanders | 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.