Dai-2-Ji-Senkou-Sen, also known as the Second Battle of the Pacific, refers to a significant military conflict during World War II. It involved naval engagements primarily between the forces of Japan and the United States in the Pacific theater. This battle was characterized by strategic maneuvers and the use of aircraft carriers, which played a crucial role in naval warfare. The battle took place in 1942 and was part of a larger series of confrontations in the Pacific. It marked a turning point in the war, as the United States began to gain the upper hand against Japan, leading to subsequent victories in the region.