Originally Posted by MrPheer

Actually it is Whiskey Pete. The military phonetic for W is whiskey, not willie.

I've fired alot of WP artillery rounds with a timed fuze to explode just a hundred feet or so above ground to cover the area with burning phosphorous and to provide a dense smoke cover. The illumination rounds are not the same as the WP rounds even though they both use white phosphorous, the illum rounds explode in the air and have a phosphorous flare attached to a parachute, to illuminate the battlefield and it works excellant. The WP rounds are used as incendiaries or to provide smoke cover.