An army is a group of people governmental or institutional working under command of their senior in order to protect the country and its people.
Functions or roles of army are:-
1.Protect the country and its citizens.
2.Maintain peace in the society.
3.Serve nation during hard time or war time.
4.Cooperate works in local ,national and international levels.
5.Preserve the heritages as well as culture of the nation.
the duties of army are:-
1.Keep the nation and citizen safe.
2.Help people that are in need.
3.Keep the heritage areas clean.
4.Work for development of nation.
5.Help other underdeveloped or developing countries.