David D. McKiernan is a retired United States Army

United States Army

The United States Army is the main branch of the United States Armed Forces responsible for land-based military operations. It is the largest and oldest established branch of the U.S. military, and is one of seven U.S. uniformed services...

 four-star general

General (United States)

In the United States Army, United States Air Force, and United States Marine Corps, general is a four-star general officer rank, with the pay grade of O-10. General ranks above lieutenant general and below General of the Army or General of the Air Force; the Marine Corps does not have an...

 who served in Afghanistan as Commander, International Security Assistance Force

International Security Assistance Force

The International Security Assistance Force is a NATO-led security mission in Afghanistan established by the United Nations Security Council on 20 December 2001 by Resolution 1386 as envisaged by the Bonn Agreement...

 (ISAF) from June 3, 2008 to June 15, 2009. He served concurrently as Commander, U.S. Forces Afghanistan (USFOR-A) from October 6, 2008 to June 15, 2009.

Prior to Afghanistan, McKiernan was Commanding General, U.S. Army, Europe and Seventh U.S. Army from December 14, 2005 to May 2, 2008.