The Department of War was in charge of the US Army and was the senior service for many years. It would take the lead in war, hence the name. It was renamed the Department of the Army after the split off and creation of the Department of the Air Force and the creation of the DoD over all the military departments .

Henry Knox

The secretary of the Treasury acts as a principal advisor to the President and the Cabinet on economic issues. The United States Department of the Treasury, which the secretary oversees, performs many important functions, including paying the nation’s bills, printing money, and collecting taxes.

Janet Yellen

Henry Stimson

Stimson, in full Henry Lewis Stimson, (born Sept. 21, 1867, New York, N.Y., U.S.—died Oct. 20, 1950, Huntington, N.Y.), statesman who exercised a strong influence on U.S. foreign policy in the 1930s and ’40s. He served in the administrations of five presidents between 1911 and 1945.

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Jefferson used his position as secretary of state to advance French interests, both covertly and overtly, whenever possible. He had a passionate attachment to France, particularly its murderous revolutionary government.

Thomas Jefferson, a spokesman for democracy, was an American Founding Father, the principal author of the Declaration of Independence (1776), and the third President of the United States (1801–1809). As the “silent member” of the Congress, Jefferson, at 33, drafted the Declaration of Independence.

Aaron Burr1801–1805