High Quality Content by WIKIPEDIA articles! The Battle of Mount Austen, the Galloping Horse, and the Sea Horse, part of which is sometimes called the Battle of the Gifu, took place from 15 December 1942 to 23 January 1943 and was primarily an engagement between United States and Imperial Japanese forces in the hills near the Matanikau River area on Guadalcanal during the Guadalcanal Campaign. The U.S. forces were under the overall command of Alexander Patch and the Japanese forces were under the overall command of Harukichi Hyakutake.