On 17 August 1942, 221 U.S. Marines of the 2nd Marine Raider Battalion raided Makin from two submarines. The raid was intended by the Americans to confuse the Japanese about US intentions in the Pacific, a feint to draw Japanese attention away from the planned invasion route through the Solomons. It is instead believed to have alerted the Japanese to the strategic importance of the Gilbert Islands and led to their reinforcement and fortification. Marines captured during this operation were subsequently summarily executed by the Japanese, in gross violation of the laws of war.