Answer:
Provide for the common defense, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity.
Step-by-step explanation:
A constitution is a fundamental document that defines rules and regulations, laws and legislation as well as the power and authority of the government to conduct the functioning of any country.
A preamble refers introductory statement which defines the objectives of the Constitution. It describes the events that are followed inside the constitution but excludes the rules and laws.
It should be noted that the military is a branch of the federal government, and its principal mission is to safeguard and defend the country's interests from enemies and rivals to maintain harmony in the country.