After the Battle of Savo Island, 1400 men in various support units of the 2nd Marine Regiment who had not yet landed on Tulagi were returned to Espiritu Santo after the transports they were on were withdrawn from the area. Deeming them "idle Marines", Admiral Richmond K. Turner decided to form them into a "2nd Provisional Raider Battalion" without consulting the Commandant of the Marine Corps. The unit was ordered created on 29 August 1942 but the order was superseded on 28 September 1942 by theater commander Admiral Robert L. Ghormley. Admiral Turner believed that regimental or larger sized Marine units were not suitable for Marine amphibious forces and desired that all Marine battalions be re-formed as Raider battalions, which may have influenced the Marine Corps to take a dim view of the entire Raider concept.