Following the end of World War II, the Yangtze River was again opened to international trade and patrolled by foreign - in particular US and British - warships. This state of affairs ended in 1949 with the Communist takeover.
British forces defeated Indonesian nationalists at Surabaya, Java.
in wikipedia
21 Feb 1946–28 Apr 1951 British Commonwealth Occupation Force
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The British Commonwealth Occupation Force (BCOF), consisting of Australian, British, Indian and New Zealand troops, assists the United States in the occupation of Japan. The BCOF is headquartered at Kure and is responsible for supervising demilitarization and the disposal of Japan’s war industries. From 1947 on, it winds down its presence in Japan, eventually merging with the British Commonwealth Forces Korea after the Korean War breaks out.
in wikipedia