On February 23, Lieutenant Colonel Chandler W. Johnson, the Second Battalion commander, ordered a combat patrol to climb, seize, and occupy the top of Mount Suribachi and raise the battalion's flag if possible to signal it was secure. Captain Dave Severance, commander of E Company, organized a 40-man patrol taken from the remainder of his Third Platoon and the battalion. First Lieutenant Harold Schrier, the company's executive officer, was chosen by Lt. Col. Johnson to be in command of the patrol. At 8:30 am, the patrol started to climb the east slope of Suribachi. The patrol included two Navy corpsmen and stretcher bearers. Less than an hour later, after receiving occasional Japanese sniper fire, the patrol reached the rim of the volcano. After a brief firefight there, Lt. Schrier and his men captured the summit. After finding a Japanese steel pipe and attaching the flag to it, the flagstaff was taken to the highest place on the crater. At about 10:30 a.m., Lt. Schrier, Platoon Sergeant Ernest Thomas, Sergeant Henry Hansen, and Corporal Charles Lindberg raised the flag. Seeing the raising of the national colors immediately caused loud cheering from the Marines, sailors, and Coast Guardsmen on the beach below and from the men on the ships docked at the beach. Due to the high winds on Mount Suribachi, Sgt. Hansen, Private Phil Ward, and Navy corpsman John Bradley pitched in to help make the flagstaff stay in a vertical position. The men at, around, and holding the flagstaff were photographed several times by Marine Staff Sergeant Louis R. Lowery, a photographer with Leatherneck magazine who accompanied the patrol up the mountain. Platoon Sgt. Thomas was killed on Iwo Jima on March 3 and Sgt. Hansen was killed on March 1.