sentences:  At the beginning of 1945, the south-eastern part of Bougainville was occupied by the Japanese 6th Division, under the command of Lieutenant General Tsutomu Akinaga.Made up of the 13th and 23rd Infantry Regiments—600 and 700-strong respectively—as well as the 6th Field Artillery Regiment, the 6th Engineer Regiment, the 6th Transport Regiment and the 4th Field Heavy Artillery Regiment, Akinaga's division consisted of 3,300 men.The previous November, the Australian II Corps under Lieutenant General Stanley Savige had taken over responsibility of the island from the US XIV Corps, who had been transferred to fight in the Philippines.