How did the command of the army act challenge the constitution?

it made the general of the army above congressional law.
it took away the presidential power assigned in the constitution.
it made the army respond to judicial review.
it gave congress military powers.

Good Morning!

It took away the presidential power assigned in the Constitution.

The Command of the Army Act eventually removed from Johnson the direct power over the military orders, and they were now directed to the Army General (then Ulysses S. Grant). This political move eventually weakened the president by taking power from his hands.
hugs!