This is the origin of the 21-gun salute

File:Flickr - Official U.S. Navy Imagery - Sailors fire a 21-gun salute during a burial at sea..jpg - Wikimedia Commons

21 Guns — Honoring George H.W. Bush, by John H. Thurman

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The History Of The 21-Gun Salute Explained

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The 21 Gun Salute - Defence Forces

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