A memorial can honor one person, or many. At its simplest, a memorial might be just a headstone in a cemetery, such as the ones we've shown from the Downey Cemetery. Or, as in the wall above, it can honor the 1,102 seamen who died in the USS Arizona on December 7, 1941. This wall is part of the USS Arizona Memorial, which sits just above the sunken ship.
"The Arizona is no longer in commission, but is an active U.S. military cemetery. As survivors of the attack on the Arizona pass away, many choose to have their ashes either scattered in the water over the ship, or have their urns placed within the structure of the ship reserved for the purpose. As a special tribute to the ship and her lost crew, the United States flag flies from the flagpole, which is attached to the severed mainmast of the sunken battleship." (Wikipedia)