Sir William Watt Leggatt (23 December 1894 – 27 November 1968) was an Australian soldier, lawyer and politician. He served as commanding officer of the &lt;a href="2/40th%20Battalion%20%28Australia%29"&gt;2/40th Battalion&lt;/a&gt; and later Sparrow Force during the Second World War, fighting in Timor against the Japanese invasion in 1942. He was captured by the Japanese and sent to Changi Prison in Singapore. Following the war, he was based in Melbourne in charge of war crimes investigation until 1946. In 1948 he was elected to the Victorian parliament. He died in 1968 and was accorded a state funeral.