A feu de joie (French: "fire of joy") is a celebratory rifle salute, described as a "running fire of guns." As soldiers fire into the air sequentially in rapid succession, the cascade of blank rounds produces a characteristic "rat-tat-tat" effect.
It is used on rare landmark occasions of national rejoicing. During the 18th and 19th centuries, a feu de joie has celebrated a military victory or birthday. In recent years, it has marked the 80th Birthday and Diamond Jubilee of Queen Elizabeth II.
A spectacular feu de joie ran up and down double lines of infantrymen at Valley Forge, Pennsylvania, on 6 May 1778 to celebrate the alliance between the newly independent United States of America with France.
The men were placed in specified positions to fire a feu de joie with muskets and cannon—three times three discharges of thirteen cannon. At the first the army huzzaed, "Long live the King of France"; at the second, "Long live the friendly European powers"; and at the third there was a shout, "The American States."
From his headquarters at Ross Hall, General George Washington ordered a feu de joie to celebrate the anniversary of the signing of the Declaration of Independence.
Tomorrow, the Anniversary of the Declaration of Independence will be celebrated by the firing thirteen Pieces of Cannon and a feu de joie of the whole line; the Army will be formed on the Brunswick side of the Rariton at five o'Clock in the afternoon on the ground pointed out by the Quarter Master General. The Soldiers are to adorn their Hats with Green-Boughs and to make the best appearance possible. The disposition will be given in the orders of tomorrow. Double allowance of rum will be served out.
In May 1782 a feu de joie at West Point celebrated the birth of the Dauphin of France, and was witnessed by a Dr. Thacher.