Following the North Atlantic Council 's decision on implementation of Article 5 of the Washington Treaty as a consequence of the 11 September 2001 attacks against the United States , STANAVFORMED was withdrawn from exercise Destined Glory 2001 on 6 October 2001 and deployed to the Eastern Mediterranean to conduct Operation Active Endeavour , NATO 's maritime contribution to the fight against terrorism . Since then STANAVFORMED and later SNMG2 participated in and supported Operation Active Endeavour whenever required
11 September 2001 attacks
September 11 attacks
Standing NATO Maritime Group 2