At the Battle of Mount Austen, the Galloping Horse, and the Sea Horse in January 1943, Oka and the 1st and 3rd Battalions from the 124th unsuccessfully attempted to defend a terrain feature called the Sea Horse from American attacks.
I Slaget ved Mount Austen, Galloping Horse og Sea Horse i januar 1943 forsøgte Oka og 1. og 3. bataljon af 124. infanteriregiment uden held at forsvare en terrænformation, som blev kaldt Sea Horse imod amerikanske angreb.