In the Battle of Naulochus, Marcus Vipsanius Agrippa, admiral of Octavian, defeats Sextus Pompeius, son of Pompey, thus ending Pompeian resistance to the Second Triumvirate.

War of the Spanish Succession: Gibraltar is captured by an English and Dutch fleet, commanded by Admiral Sir George Rooke and allied with Archduke Charles.

A British fleet under Admiral George Anson defeats the French at the first battle of Cape Finisterre.

World's first submarine attack: the American submersible craft ''Turtle'' attempts to attach a time bomb to the hull of British Admiral Richard Howe's flagship HMS ''Eagle'' in New York Harbor.

The United States Flag is formally recognized by a foreign naval vessel for the first time, when French Admiral Toussaint-Guillaume Picquet de la Motte rendered a nine gun salute to USS ''Ranger'', commanded by John Paul Jones.

The entire Dutch fleet is captured by British forces under the command of Sir Ralph Abercromby and Admiral Sir Charles Mitchell during the Second Coalition of the French Revolutionary Wars.

Admiral Dmitry Senyavin destroys the Ottoman fleet in the Battle of Athos.

Admiral Charles Napier defeats the navy of the Portuguese usurper Dom Miguel at the third Battle of Cape St. Vincent.

American Civil War: A flotilla commanded by Union Admiral David Farragut passes two Confederate forts on the Mississippi River on its way to capture New Orleans, Louisiana.

American Civil War: Forces under Union Admiral David Farragut capture the Confederate city of New Orleans, Louisiana.

American Civil War: New Orleans, Louisiana falls to Union forces under Admiral David Farragut.

American Civil War: the Battle of Mobile Bay begins – at Mobile Bay near Mobile, Alabama, Admiral David Farragut leads a Union flotilla through Confederate defenses and seals one of the last major Southern ports.

Russo-Japanese War: The Battle of Tsushima ends with the destruction of the Russian Baltic Fleet by Admiral Togo Heihachiro and the Imperial Japanese Navy.

Admiral Richard E. Byrd and Floyd Bennett claim to have flown over the North Pole (later discovery of Byrd's diary seems to indicate that this did not happen).

World War II: The Battle of Midway begins. Japanese Admiral Chuichi Nagumo orders a strike on Midway Island by much of the Imperial Japanese navy.

World War II – Fuehrerbunker: Adolf Hitler marries his long-time partner Eva Braun in a Berlin bunker and designates Admiral Karl Dönitz as his successor. Both Hitler and Braun will commit suicide the next day.

World War II: Ratification in Berlin-Karlshorst of the German unconditional surrender of May 8 in Rheims, France, with the signatures of Marshal Georgy Zhukov for the Soviet Union, and for the Western Headquarters Sir Arthur Tedder, British Air Marshal and Eisenhower’s deputy, and for the German side of Colonel-General Hans-Jürgen Stumpff as the representative of the Luftwaffe, Field Marshal Wilhelm Keitel as the Chief of Staff of OKW, and Admiral Hans-Georg von Friedeburg as Commander-in-Chief of the Kriegsmarine.

The Spanish Prime Minister, Admiral Luis Carrero Blanco, is assassinated by a car bomb attack in Madrid.

An IRA bomb kills British World War II admiral Louis Mountbatten, 1st Earl Mountbatten of Burma and 3 others while they are boating on holiday in Sligo, Republic of Ireland. Another bomb near Warrenpoint, Northern Ireland kills 18 British soldiers.