The Commander-in-Chief,
Home Fleet (
Royal Navy), gained a NATO responsibility as Commander-in-Chief Eastern Atlantic Area (CINCEASTLANT), as part of
SACLANT, when the NATO military command structure was established in 1953. CINCEASTLANT headquarters was established at the
Northwood Headquarters in northwest London. Commander-in-Chief Eastern Atlantic was redesignated as Commander, Allied Maritime Component Command Northwood ('CC-Mar' or AMCCN) around 2004. The command, which was renamed Allied Maritime Command Northwood in 2010, reports to
Allied Joint Force Command Brunssum. At the
2010 NATO Summit in Lisbon it was decided to create a leaner and more effective command structure. This reduced the number of major headquarters from 11 to 7 and, in particular, led to the deactivation of the
Allied Maritime Command Naples on 27 March 2013 leaving the newly named MARCOM as the sole maritime component in NATO. MARCOM led
Operation Active Endeavour, NATO's only Article-5 operation which ended in 2016. MARCOM also led
Operation Ocean Shield, NATO's counter-piracy operation in the
Gulf of Aden and
Indian Ocean which also ended in 2016. Currently, MARCOM leads
Operation Sea Guardian designed as a Maritime Security Operation to provide security in the
Mediterranean Sea. Peacetime Vigilance Activity is conducted under this command. ==Role==