George William Casey Sr. was a United States Army major general who was killed in a helicopter crash in July 1970, in South Vietnam. General Casey, who had served in the Korean War, was in command of the US 1st Cavalry Division at the time of his death. His son George W. Casey Jr. served as the 36th Chief of Staff of the United States Army from April 2007 to April 2011.

George William Casey Jr. is a retired four-star general who served as the 36th Chief of Staff of the United States Army from April 10, 2007, to April 10, 2011. He served as Commanding General, Multi-National Force – Iraq from June 2004 to February 8, 2007, and was in the army for his entire adult working life. He now resides in Arlington, Virginia.