Within the public domain: "First Iwo Jima Flag Raising. Small flag carried ashore by the 2d Battalion, 28th Marines is planted atop Mount Suribachi at 1020, 23 February 1945 This picture is usually captioned as: 1st Lieutenant Harold G. Schrier with Platoon Sergeant Ernest I. Thomas, Jr. (both seated), PFC James Michels (in foreground with carbine), Sergeant Henry O. Hansen (standing, wearing soft cap), Corporal Charles W. Lindberg (standing, extreme right), on Mount Suribachi at the first flag raising. However, PFC Raymond Jacobs disputed these identifications,[1] and asserted that it should be: PFC James Robeson (lower left corner; not visible in this cropped version of the photo), Lieutenant Harold Schrier (sitting behind his legs), PFC Raymond Jacobs (carrying radio), Sergeant Henry Hansen (cloth cap), unknown (lower hand on pole), Sergeant Ernest Thomas (back to camera), Phm2c John Bradley (helmet above Thomas), PFC James Michels (with carbine), Cpl Charles Lindberg (above Michels)."

Source: Wikipedia