The accolade was the central act in the rite of passage ceremonies conferring knighthood in the Middle Ages.
The Accolade (1901), by Edmund Leighton
King John II of France in a ceremony of "adoubement", early 15th century miniature
Francis Drake (left) being knighted by Queen Elizabeth I in 1581. The recipient is tapped on each shoulder with a sword. Note that in reality, Elizabeth had the French ambassador perform the ceremony instead.
Accolade performed by Queen Beatrix of the Netherlands during the Military Order of William ceremony of Marco Kroon in 2009