from his position, and Colonel Simon Hetherington was designated as acting commander in the interim. Brigadier-General Jonathan Vance returns in until TF 5-10. At the beginning of July 2010, Canadians transferred command responsibility for Kandahar, Arghandab and Zhari to U.S. forces and control for the Horn of Panjwaii directly to Regional Command South. Task Force 1-10 (Operation Athena Rotation 9) Battle group – 1st Battalion The Royal Canadian Regiment Battle Group Dates – April 2010 – November 2010 Task Force 3-10 (Operation Athena Rotation 10) Battle group – 1st Battalion Royal 22e Régiment Battle Group Dates – November 2010 – July 2011 Last task force under combat operations mandate Task Force 5-10 Task Force Kandahar – Headquarters rotation only. Based on headquarters from 2 Canadian Mechanized Brigade Group. Commander – Brigadier-General Dean Milner Last headquarters prior to Mission Transition Task Force and Operation Attention. Canada's combat mission in Kanadar ends 7 July 2011. See also Operation Athena Canada's role in the Afghanistan War Canadian Forces casualties in Afghanistan References Ad hoc units and formations of Canada