http://www.washingtonpost.com/local/a-strange-bit-of-dc-lore-were-two-hobos-almost-entombed-in-a-memorial/2015/01/21/b91f4daa-a193-11e4-9f89-561284a573f8_story.html?hpid=z12
As a kid, my older brothers said the Second Division Memorial was actually for the Lady of the Lake in the King Arthur story.