The Peruvian Navy is the branch of the Peruvian Armed Forces tasked with surveillance, patrol and defense on lakes, rivers and the Pacific Ocean up to 200 nautical miles from the Peruvian littoral. Additional missions include assistance in safeguarding internal security, conducting disaster relief operations and participating in international peacekeeping operations.

The Second Ecuadorian–Peruvian War, known locally as the War of '41, was a South American border war fought between 5–31 July 1941. It was the first of three military conflicts between Ecuador and Peru during the 20th century.