Fort Leavenworth ? Lt. Gen. Robert Caslen will officially take command this week of Fort Leavenworth.

Caslen will assume command on Wednesday during a ceremony in Eisenhower Hall inside the post’s Lewis and Clark Center.

He replaces Lt. Gen William Caldwell IV, who was reassigned in November to command of the NATO Training Mission-Afghanistan.

Caslen arrives after serving as commander of the 25th Infantry Division at Schofield Barracks, Hawaii. He has also been commander of the Multinational Division-North during the war in Iraq.

At Fort Leavenworth, Caslen is commander of the Combined Arms Center, which is responsible for leader development, doctrine development and training support for the Army.