LOLITA C. BALDOR, Associated Press

WASHINGTON (AP) — The Army has named a new commander at Fort Riley, Kansas, to replace an officer who was fired Monday, just weeks before soldiers from the 1st Infantry Division deploy to Iraq.

Maj. Gen. Joseph Martin is assuming command of the division. Martin replaces Maj. Gen. Wayne Grigsby Jr., who is the subject of an Army investigation and was removed from command. The Army hasn’t released details of the investigation.

Martin is a 1986 graduate of the U.S. Military Academy at West Point, and recently was commander at the National Training Center in Fort Irwin, California. He deployed to Iraq twice as a commander during the Iraq war. He has prior experience with the 1st Infantry Division. According to his National Training Center bio, Martin commanded the 2nd Brigade, 1st Infantry Division from Fort Riley, and deployed with that command to serve in northwest Baghdad, Iraq.

Martin has also served as the Deputy Commanding General, US Army Combined Arms Center at Fort Leavenworth.

Brig. Gen. Jeffery D. Broadwater will take command of the National Training Center. He’s currently deployed to Afghanistan.