The Commonwealth forces, fighting as part of the United Nations, consisted of a number of British, Australian and New Zealand units. These included three Battalions of the 28th British Commonwealth Brigade, the 1st Battalion The King's Own Scottish Borderers (KOSB), 1st Battalion King's Shropshire Light Infantry (KSLI) and 3rd Battalion, Royal Australian Regiment. Brigadier George Taylor (United Kingdom) was the Brigade Commander. The British Commonwealth Division consisted of the 25th, 28th and 29th Brigades under the command of Lieutenant General James "Gentleman Jim" Cassels (later Field Marshal Sir James) and was part of 1 Corps. These units was arrayed against the Chinese Communist forces. 3 Battalion RAR was commanded by Lieutenant Colonel 'Frank' Francis Hassett. Commonwealth forces main aims were to take a number of hill positions, and taking the main objective, Maryang San.