The Glorious First of June (also known as the Third Battle of Ushant, and in France as the Bataille du 13 prairial an 2 or Combat de Prairial)was the first and largest fleet action of the naval conflict between the Kingdom of Great Britain and the First French Republic during the French Revolutionary Wars. The British Channel Fleet under Lord Howe attempted to interdict the passage of a vitally important French grain convoy from the United States, which was protected by the French Atlantic Fleet, commanded by Louis Thomas Villaret de Joyeuse. The two forces clashed in the Atlantic Ocean, some 400 nautical miles (741 km) west of the French island of Ushant.
The action was the culmination of a campaign that had criss-crossed the Bay of Biscay over the previous month. Both sides had captured numerous merchant ships and minor warships and had engaged in two partial, but inconclusive, fleet actions. The aftermath of 1 June 1794 left both fleets shattered and in no condition for further combat. Despite losing seven ships of the line, Villaret bought enough time for the French grain convoy to reach safety. However, he was also forced to withdraw his battle-fleet to port, leaving the British free to conduct a campaign of blockade for the remainder of the war. Both sides claimed victory. The result of the battle was seized upon by the press of both nations as a shining example of the prowess and bravery of their respective navies.