The Japanese left Deboyne during May 10–12, 1942 and did not return during World War II. The base became untenable for the Japanese due to proximity to Allied airfields at Port Moresby and the failure of MO Sakusen.
In May 1942, the Japanese troops departed Deboyne, never returning to the area during World War II. This was due to the base's vulnerability because of its proximity to Allied airfields in Port Moresby and the unsuccessful operation known as Operation MO Sakusen.