April 22

1744: War of the Austrian Succession: The Battle of Toulon causes several Royal Navy captains to be court-martialed, and the Articles of War to be amended.

1909: The sixteen battleships of the Great White Fleet, led by USS Connecticut, return to the United States after a voyage around the world.

1915: World War I: The Imperial German Navy institutes unrestricted submarine warfare.

2015: A ferry carrying 100 passengers capsizes in the Padma River, killing 70 people.