Consistency of Military Policy

"The Consistency of Military Policy" Please respond to the following:

Based on the scenario and the knowledge gained from this section, address the following:
Discuss the evolution of presidential power in military affairs and explain the fundamental elements that dictate the use of American armed forces abroad. Indicate how these elements are affected by public opinion.
What is the constitutional requirement for using military forces?
Identify some reasons why military forces should be used and some where they should not be used.
How consistent are US defense policies?