What role did the military play in regard to the emancipation proclamation?

The military is used to suppressed the possibility of civil war.

Lincoln issued the Proclamation under his authority as "Commander in Chief of the Army and Navy" under Article II, section 2 of the United States Constitution. As such, he claimed to have the martial power to free persons held as slaves in those states that were in rebellion "as a fit and necessary war measure for suppressing said rebellion".