Soldiers with a color guard detail in the 4th Battalion "Straight Arrow," 42nd Field Artillery Regiment, attached to the 2nd Brigade Combat Team, 1st Infantry Division, Multi-National Division – Baghdad present the colors at the transfer of authority ceremony between the Straight Arrow Battalion and the 1st Combined Arms "Vanguard" Battalion, 18th Infantry Regt., 2nd BCT, 1st Inf. Div., MND-B at Forward Operating Base Prosperity, March 4. The ceremony marked the end of a one-year deployment for the Straight Arrow Battalion.