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Harry Hopkins
John McGovern was the Secretary of the Navy in the 1980s but he was not an admiral
Admiral Vidal Francisco Soberon Sanz is the Secretary of the Navy for Mexico.
Admiral James Watkins was the Secretary of Energy in the Reagan Administration.
The president, of course, is the Commander in Chief, and was Franklin Roosevelt in 1941. Roosevelt had been Assistant Secretary of the Navy during WWI, and took a great interest in the Navy. The Secretary of the Navy in 1941 was Frank Knox. (Before 1947 there were both a Secretary of the Navy and a Secretary of War in the cabinet; today these are combined into the Secretary of Defense). The Chief of Naval Operations (CNO), the highest ranking man in uniform, was Admiral Harold R. "Betty" Stark. Stark was relieved in March, 1942, for the failures leading to the Pearl Harbor disaster, though he was given another important command, of US Naval forces in Europe.
Militarily, the Commanding Officer of the Navy is the Chief of Naval Operations, a 4 star Admiral. He reports to the Secretary of the Navy, who is a DoD civilian; he in turn reports to the Secretary of Defense.
No. The Secretary of Defense is second to the President. Then comes the Secretary of the Military Branch THEN comes the Joint Chief of Staff. And below the Joint Chief would be the four star General or known just as a General. Below this rank in descending order are: A Lieutenant General, Major General, Brigadier General, and then comes Colonel. For the US Navy the rank names are a bit different. Under the Joint Cheif of the Navy comes an Admiral. Then comes the Vice Admiral, then the Upper Rear Admiral, and finally a Lower Rear Admiral, followed by the Ship Captain.
Militarily, the Commanding Officer of the Navy is the Chief of Naval Operations, a 4 star Admiral. He reports to the Secretary of the Navy, who is a DoD civilian; he in turn reports to the Secretary of Defense.
Example: Russian Admiral Rozhestvensky commanded battleships during the Battle of Tsushima on 27 May 1905.
The Union Secretary of the Navy held a cabinet position with President Lincoln. Secretary Gideon Welles believed that Admiral Samuel P. Lee was no longer able to command the North Atlantic Blockading Squadron. Welles replaced him with the then Rear Admiral David Porter. According to Welles, Admiral Lee was ineffective and his constant request more ships for the blockade became annoying and a distraction from his primary duty of stopping illegal Confederate shipping.
William McKinley, General Nelson Miles, Admiral George Dewey and Colonel Theodore Roosevelt.
In 1863, Rear Admiral Samuel Lee was in command of the North Atlantic Blockading Squadron. He recognized the importance of Wilmington to the Confederates and convinced Secretary of the Navy Gideon Welles approve of plans to capture and if not, to effectively end Southern commerce from that port.