The practice of firing gun salutes has existed for centuries. Early warriors
demonstrated their peaceful intentions by placing their weapons in a position that
rendered them ineffective. In early times, it was customary for a ship entering a
friendly port to discharge its cannon to demonstrate that they were unloaded.
The rendering of gun salutes in odd numbers may be traced to the superstition that
odd numbers were considered lucky. Seven, for example, was held by the earliest
civilizations to have mystical powers. Seven gun salutes were widely used. Forts
ashore, which could store gunpowder more readily and in greater quantity than on
board ship, would sometimes fire three shots for each shot fired afloat. Salutes with
an even number of guns came to signify that the captain or ship master had died on
the voyage.
For many years, the number of guns fired for various purposes differed from
country to country. By 1730, the Royal Navy was prescribing 21 guns for certain
anniversary dates, although this was not mandatory as a salute to the Royal family
until later in the eighteenth century.
Several famous incidents involving gun salutes took place during the American
Revolution. On 16 November 1776, the Continental Navy brigantine Andrew Doria,
Captain Isaiah Robinson, fired a salute of 13 guns on entering the harbor of St.
Eustatius in the West Indies (some accounts give 11 as the number). A few minutes
later, the salute was returned by 9 (or 11) guns by order of the Dutch governor of
the island. At the time, a 13 gun salute would have represented the 13
newly-formed United States; the customary salute rendered to a republic at that
time was 9 guns. This has been called the "first salute" to the American flag. About
three weeks before, however, an American schooner had had her colors saluted
at the Danish island of St. Croix. The flag flown by the Andrew Doria and the
unnamed American schooner in 1776 was not the Stars and Stripes, which had not
yet been adopted. Rather, it was the Grand Union flag, consisting of thirteen
alternating red and white stripes with the British Jack in the union.
The first official salute by a foreign nation to the Stars and Stripes took place on 14
February 1778, when the Continental Navy ship Ranger, Captain John Paul Jones,
fired 13 guns and received 9 in return from the French fleet anchored in Quiberon
Bay, France.
The U.S. Navy regulations for 1818 were the first to prescribe a specific manner for
rendering gun salutes (although gun salutes were in use before the regulations were
written down). Those regulations required that "When the President shall visit a
ship of the United States' Navy, he is to be saluted with 21 guns." It may be noted
that 21 was the number of states in the Union at that time. For a time thereafter, it
became customary to offer a salute of one gun for each state in the Union, although
in practice there was a great deal of variation in the number of guns actually used in
a salute.
In addition to salutes offered to the President and heads of state, it was also a
tradition in the U.S. Navy to render a "national salute" on 22 February
(Washington's Birthday) and 4 July (the anniversary of the Declaration of
Independence). A twenty-one gun salute for the President and heads of state,
Washington's Birthday, and the Fourth of July became the standard in the United
States Navy with the issuance of new regulations on 24 May 1842.
Those regulations laid out the specifics:
"When the President of the United States shall visit a vessel of the navy, he shall be
received with the following honors: The yards shall be manned, all the officers shall
be on deck in full uniform, the full guard shall be paraded and present arms, the
music shall play a march, and a salute of twenty-one guns shall be fired. He shall
receive the same honors when he leaves the ship."
"Upon the anniversary of the Declaration of Independence of the United States, the
colors shall be hoisted at sunrise, and all the vessels of the navy shall, when in port,
be dressed, and so continue until the colors are hauled down at sunset, if the state
of the weather and other circumstances will allow it. At sunrise, at meridian, and at
sunset, a salute of twenty-one guns shall be fired from every vessel in commission
mounting six guns and upwards."
"On the twenty-second day of February, the anniversary of the birth of Washington,
a salute of twenty-one guns shall be fired at meridian from every vessel of the navy
in commission mounting six guns and upwards."
Today, the national salute of 21 guns is fired in honor of a national flag, the
sovereign or chief of state of a foreign nation, a member of a reigning royal family,
and the President, ex-President, and President-elect of the United States. It is also
fired at noon of the day of the funeral of a President, ex-President, or
President-elect, on Washington's Birthday, Presidents Day, and the Fourth of July.
On Memorial Day, a salute of 21 minute guns is fired at noon while the flag is
flown at half mast.

Gardner W. Allen, A Naval History of the American Revolution 1: 159-60 (Boston:
Houghton Mifflin, 1913)

Naval Documents of the American Revolution 7 (Washington, D.C.: Naval History
Division, Dept. of the Navy, 1976)

Naval Regulations, Issued by Command of the President of the United States of
America, January 25, 1802 (Annapolis, Md.: Naval Institute Press, 1970)

Rules, Regulations, and Instructions for the Naval Service of the United States...
(Washington, D.C.: E. De Kraft, 1818)

Rules and Regulations for the Navy..., 27th Cong. 3d Sess., H. Doc. 148
(Washington, D.C., 1843).
History of the 21 Gun Salute