In the lead up to the invasion, Percival gave Major-General Gordon Bennett's two brigades, from the Australian 8th Division, responsibility for the north-western sector of the island, which including the prime invasion points. The terrain was primarily mangrove swamp and tropical forest, broken up by rivers and creeks. Brigadier Harold Taylor's 22nd Infantry Brigade, augmented by most of the Australian 2/4th Machine Gun Battalion, was assigned a 10 mile (16 kilometre) wide sector centred on Sarimbun Beach. The Jind Infantry Battalion of the Indian States Forces, which was guarding Tengah, and a company from Dalforce, a guerilla militia recruited from Singaporean Chinese. The 27th Infantry Brigade was assigned an adjoining 4,000 yard (3,650m) wide zone to the north, adjoining the causeway.