On the night of March 26, 1953, Chinese soldiers in North Korea attacked, and on March 27, overran two of three Marine hill outposts in North Korea manned by Marines and corpsmen from the 5th Marine Regiment, 1st Marine Division, named Vegas, Carson, and Reno (Vegas and Reno were overrun); Vegas was considered to be the most important outpost and the highest outpost that supported the other two outposts. Late morning that day, a head-on Marine assault was made to try and retake Vegas with the three rifle companies of the 5th Marines taking heavy casualties.