|Standing NATO Mine Countermeasures Group 1|
|Commander Jan Wijchers, Royal Netherlands Navy|
Standing NATO Mine Countermeasures Group 1 (SNMCMG1) is a North Atlantic Treaty Organisation (NATO) standing mine countermeasures immediate reaction force. Its role is to provide NATO with an immediate operational response capability.
STANAVFORCHAN and her sister force Mine Counter Measures Force Mediterranean (MCMFORMED) were tasked in June 1999 to operate in the Adriatic Sea to clear ordnance jettisoned during Operation Allied Force. The combined force comprised 11 minehunters and minesweepers and a support ship. The operation, named Allied Harvest, began on 9 June 1999. Search activities began three days later and lasted 73 days. In total, 93 pieces of ordnance were located and cleared in the nine areas which encompassed 1,041 square nautical miles (3,570 km2; 1,379 sq mi).
From 3 September 2001 it was known as the Mine Countermeasures Force North Western Europe (MCMFORNORTH) and from 1 January 2005 it became Standing NATO Mine Countermeasures Group 1.
As of 13 August 2021, SNMCMG1 consists of: