| 41. | Supervising their installation and operation was her Executive and Chief Engineering Officer, Lt . Chester W . Nimitz.
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| 42. | The entry of the United States into World War I found Van Valkenburgh serving as the battleship's engineering officer.
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| 43. | Before the war, he liked to say, he knew every one of the Navy's 120 civil-engineering officers, by name.
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| 44. | Gillmore, an engineering officer with no experience leading troops in combat, hesitated at the sight of the formidable earthworks.
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| 45. | He graduated in June 1938 and then became Chief Engineering Officer at the San Antonio Air Depot in Texas.
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| 46. | Also on that date, Chief Engineering Officer Donald Gene Fears was promoted to Lieutenant Commander, effective 1 February 1960.
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| 47. | A career Combat engineering officer, he later served as the Governor of Muthanna Province after retiring from military service.
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| 48. | Throughout the flight, he performed the role of an engineering officer, responsible for monitoring the systems of both spacecraft.
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| 49. | He joined the Royal Navy soon after the start of the Second World War and became an engineering officer.
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| 50. | During the war years Isherwood led a campaign to increase the rank and influence of engineering officers in the navy.
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