At the conclusion of the Malayan Campaign, the 27th Brigade took part in the defence of Singapore, initially defending the Causeway area. The initial Japanese assault began on the night of 8/9 February, and fell largely on the 22nd Brigade's sector where two Japanese divisions landed during the Battle of Sarimbun Beach. The brigade's troops managed to hold their area, fending off some flanking efforts by the Japanese along the Kranji River, and the 2/29th Battalion was sent south to help bolster the 22nd Brigade. The following night, however, a further Japanese landing fell in the 27th Brigade's area, and heavy fighting took place during the Battle of Kranji. The Japanese suffered heavy casualties from machine guns and mortars from the defenders, as well as burning oil, which had been sluiced across the water. Nevertheless, the attacking troops established a beachhead and the 27th Brigade's headquarters was subsequently cut off from its battalions, as the Allies were pushed back towards the centre of the island. The 2/30th Battalion was pushed back along Thompson's Road, while the 2/26th Battalion moved back to the MacRitchie Reservoir. As the Allied perimeter continued shrink around the town, the 8th Division units were brought together around Tanglin Barracks, where they remained until the garrison surrendered on 15 February. When the garrison surrendered on 15 February, the majority of the brigade's personnel were captured by the Imperial Japanese Army and subsequently spent the remainder of the war as prisoners of war in various camps throughout southeast Asia, being released in August 1945. Conditions were harsh and one in three did not survive.