A military or An Army are groups of people who are leveraged with the responsibility to protect the common people of a nation and have the right to take lethal actions against perceived threats. Given the safety and risk of an entire nation depend on their actions they are carefully selected people who are highly trained before being deployed to the field.

Military vs Army

The main difference between a military and an army is that the military is the combined force involving land, air, and navy forces whereas the army is the group of people who are charged with responsibilities that are limited to the land.
The military and Army differ in their size since given that the army is a part of the military whereas the military is all forces that safeguard a country combined. The military has several ranks respective to the navy, air force, and troops on land whereas Army which operates only on land has a limited number of ranks.
The main ranks in an Army are Lieutenant General, Major General, Brigadier General, Colonel, Major, etc. The military includes ranks such as Midshipman, Commander, Rear Admiral, and Admiral from the navy, and Air Chief Marshal, Air Marshal, and Wing Commander from air force besides the one from Army.
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