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mpyne | 3 days ago

The Department of the Army is what was previously called the Department of War. The Department of Defense is new, dating to just after WWII.

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helaoban|2 days ago

Pedantry.

The Department of War was responsible for naval affairs until The Department of the Navy was spun off from it in 1798, and aerial forces until the creation of the The Department of the Air Force in 1947, whereafter it was left with just the army and renamed the Department of the Army. All three branches were then subordinated to the new Department of Defense in 1949, which became functionally equivalent to the original entity.

The Department of War is what it was called when it was first created in 1789 by the Congress (establishing the department and the position of Secretary of War), the predecessor entity being called the The Board of War and Ordnance during the revolution.

The Department of "Defense" has never fought on home soil. Ever.

mpyne|1 day ago

> The Department of War was responsible for naval affairs until The Department of the Navy was spun off from it in 1798.

After the Continental Navy was disbanded, there wasn't much of an American Navy to have a department around until... mid to late 1797, when the first three of the Original Six frigates was commissioned into active service.

If you look at the U.S. Constitution you'll find that the 'land' and 'naval' forces were separated quite early on in Art. I Sect. 8. Even the appropriations permitted were treated distinctly.

Obviously new domains of warfare will require new schemes of organization, but the "Department of War" that people think about that conducted military operations against America's enemies up through WWII was the Army's department. The operational Navy was always under the Department of the Navy.

> The Department of "Defense" has never fought on home soil. Ever.

What does this have to do with anything? Who argued otherwise?