The Lee R Wilson Memorial is a Halo 3 multiplayer achievement. It is awarded for getting five grenade sticks in a single game of ranked free for all playlist. It gives the player 5 Gamerpoints.
The achievement is named after Lee Wilson, a Bungie employee who frequently uses grenades to stick opponents.[1] It is possibly also named after Robert Lee Wilson, a soldier during WWII who bravely sacrificed himself to save his entire squad when he smothered an enemy grenade with his body, but this has not been confirmed by Bungie. It is most likely a coincidence.
It is represented by a 16-pointed star with a plasma grenade with a "5" on it.
EASY WAY FOR ACHIEVEMENT
The easy way to get this achievement is on a sword match. Make sure you have sticky grenades, and have somebody follow you. Usually someone chasing you runs in a straight line towards you. Once they are lined up simply throw your grenade straight at him. I think this achievement is easiest done at a low rank and on the level Guardian.