ニュージョージア島の戦い
In July 1942, Shoup was named as operations and training officer (then known as D-3) of the 2nd Marine Division, and he was promoted to lieutenant colonel in August 1942. The following month he accompanied the division to Wellington, New Zealand, aboard and oversaw much of its training there. He was also briefly attached to the 1st Marine Division in October 1942 as an observer during the Guadalcanal campaign, then to the 43rd Infantry Division on Rendova Island during the New Georgia Campaign in June 1943. During the latter assignment, Shoup was wounded in action and evacuated. Still, from these experiences he observed amphibious warfare techniques which would be useful later in the war.