Task Force Leatherneck or MEB-Afghanistan was a Marine Air-Ground Task Force that operated in Helmand Province, Afghanistan.
On July 3, 2010, it was renamed as Regional Command Southwest, RC(SW)|, and in January of 2015 it was renamed Train Advise Assist Command - Southwest (TAAC-SW) under the new NATO mission RESOLUTE SUPPORT.
Task Force Leatherneck was commanded by Brigadier General Lawrence D. Nicholson with the command element at Camp Leatherneck.
The task force took over the battlespace from Special Purpose MAGTF-Afghanistan on May 29, 2009.
[3] Task Force Leatherneck comprised two regimental combat teams and four separate battalions with approximately 10,700 personnel.