to Singapore. With Sarawak now unguarded, the Brooke regime adopted a scorched earth policy where oil installations in Miri were to be destroyed and the Kuching airfield held as long as possible before being destroyed. Nevertheless, a Japanese invasion force led by Kiyotake Kawaguchi landed in Miri on 16 December 1941 and conquered Kuching on 24 December 1941, with British ground forces retreating to Singkawang in neighbouring Dutch Borneo. After ten weeks of fighting there, the Allied forces surrendered on 1 April 1942. Charles Vyner Brooke, the last Rajah of Sarawak, had already left for Sydney, Australia; his officers were captured by the Japanese and interned at the Batu Lintang camp. Sarawak remained part of the Empire of Japan for three years and eight months. During this time it was divided into three provinces – Kuching-shu, Sibu-shu, and Miri-shu – each under their respective Provincial Governor. The Japanese otherwise preserved the Brooke administrative structure and appointed the Japanese to important government positions. Allied forces later carried out Operation Semut to sabotage Japanese operations in Sarawak. During the battle of North Borneo, the Australian forces landed at Lutong-Miri area on 20 June 1945 and had penetrated as far as Marudi and Limbang before halting their operations in Sarawak. After the surrender of Japan, the Japanese surrendered to the Australian forces at Labuan on 10 September 1945. The following day, the Japanese forces at Kuching surrendered, and the Batu Lintang camp was liberated. Sarawak was immediately placed under British Military Administration and managed by Australian Imperial Forces (AIF) until April 1946. Lacking the resources to rebuild Sarawak after the war, Charles Vyner Brooke decided to cede Sarawak as British Crown Colony and a Cession Bill was put forth in the Council Negri (now Sarawak State Legislative Assembly), which was debated for three days. The bill was passed on 17 May 1946 with a narrow majority (19 versus 16 votes). This caused hundreds of Malay civil servants to resign in protest, sparking an anti-cession movement and the assassination of the second colonial governor of Sarawak, Sir Duncan Stewart. Despite the resistance, Sarawak became a British Crown colony on 1 July 1946. Anthony Brooke opposed the cession of Sarawak to the British Crown, for which he was banished from Sarawak by the colonial government. He was only allowed to return 17 years later after Sarawak had become part of Malaysia. In 1950 all anti-cession