What executive department coordinates government functions related to national security and the military?

The Department of Defense, like its name implies, is the executive branch department that is put in charge of over-viewing all agencies and functions of the government related to national security and the military.

franklin d. roosevelt

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battle of saint-mihiel, (12–16 september 1918), allied victory and the first u.s.-led offensive in world war i. the allied attack against the saint-mihiel salient provided the americans with an opportunity to use their forces on the western front en masse.

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