Complex sentence: In February 1940, Muirhead-Gould became the Naval Officer In Command of Sydney Harbour, a posting that lasted until September 1944, although he was not popular among the officers and sailors of the Royal Australian Navy under his command.
Split into simpler sentences: In February 1940, Muirhead-Gould was assigned as the Naval Officer In Command of Sydney Harbour, a posting that lasted until September 1944. He was not considered a popular superior among the officers and sailors of the Royal Australian Navy under his command.