Operation Goodtime and the Battle of the Treasury Islands, 1943On October 27, 1943, a force of New Zealanders and Americans invaded the Treasury Islands in the South Pacific, retaking them from their Japanese occupiers. Codenamed Operation Goodtime, the action marked the first time New Zealand forces took part in an opposed landing since Gallipoli in 1915. In an unusual allocation of troops in the American dominated theatre, New Zealand provided the fighting men and America the air, naval, and logistical support.