On 7 August 1942 the 1st Raider Battalion, assigned to the 1st Marine Division, landed on Tulagi in the British Solomon Islands as the opening phases of the Guadalcanal campaign commenced. After Tulagi was captured, the Raiders were moved to Guadalcanal to defend Henderson Field. One of their most notable engagements was the "Battle of Edson's Ridge", where the 1st Raiders scored a major victory over Japanese forces. For their heroic combat leadership, Colonel Merritt Edson and Major Kenneth Bailey were both awarded the Medal of Honor, the latter posthumously.