Answer:
if you want an answer that is similar but not exactly the answer use the following (which was right on edg):
The department of war was made back in 1789 to help manage the military of the US. It established an official army when they could have just relied on militias. The national reorganization act of 1947 changed the way the cabinet was divided by creating a new department called the department of defense. It overlooked the military's actions.