To protect the ships and bases of the US Navy.
no you don't have to be in the military or navy
to protect us from invasion
One purpose is to protect us from an ocean-bound attack from a country
to fight the Barbary pirates and protect our shipped goods
to protect
The Navy is not out to get any of us. The whole entire purpose pose of the Navy, Marine Corps, Airforce, Army, and Coast Guard, are to protect Our Father Land from those who were raised and taught to believe that we are there enemy.
escort duty for larger ships and protect landing craft
Admiral Mahan urged the US to build a strong navy to protect its interests, specifically promoting the idea of naval power as a key factor in securing economic and military dominance on the world stage. He emphasized the importance of having a powerful navy to control sea routes, protect trade, and project power globally.
Persian Gulf - In late 1980's, the US Navy was sent to the Persian Gulf to protect the shipping lanes. Iranian gunboats had been attacking ships and tried to attack the US Navy ships. During the 1991 Desert Storm war, they launched Navy bombers and Tomahawk missiles to attack Baghdad.
The US Navy SEALS is a Special Operations Group of the US Navy
The Texas Navy was used to protect ships trading with Texas from the Mexican Navy.