Operation Tomahawk was an airborne military operation by the 187th Regimental Combat Team (RCT) on 23 March 1951 at Munsan-ni as part of Operation Courageous in the Korean War. Operation Courageous was designed to trap large numbers of Chinese and North Korean troops between the Han and Imjin Rivers north of Seoul, opposite the South Korean I Corps. The intent of Operation Courageous was for I Corps, which was composed of the U.S. 25th and 3rd IDs and the ROK 1st Division, to advance quickly on the North Korean and Chinese troops and reach the Imjin River with all possible speed.