On 5 February 2004, Task Force Olympia was activated, as a sub-element of I Corps headquarters with the mission to command forward-deployed units in Iraq. This marked the first time that I Corps had forward soldiers in combat since the end of the Korean War. Task Force Olympia included units from all three components of the Army (Active, Reserve and National Guard) as well as Marine and Australian officers. Task Force Olympia's subordinate units included the 3rd Stryker Brigade Combat Team, 2nd Infantry Division, which deployed for Iraq on 8 November 2003, and returned to Fort Lewis after one year of combat duty, and the 1st Brigade, 25th Infantry Division, which departed Fort Lewis on 15 September 2004, for one year and returned September 2005. On 1 June 2006, the 1st Brigade, 25th Infantry Division cased its colors and became the 2d Cavalry Regiment - Stryker Brigade Combat Team with its home station in Germany. A new unit then uncased the colors of its new designation on 1 June 2006 - the 4th Brigade, 2d Infantry Division.