The WP (white phosphorus) grenade is a powerful incendiary grenade which produces a white smoke which burns those who come in contact with it.
The WP grenade is a deadly alternative to the Mk 2 grenade, but has smaller quantity of uses. (3 uses instead of the 6 uses of the Mk 2 grenade). Use of the WP grenade will not cause overt status, even if a target is set on fire, making it useful for missions where stealth is crucial. Enemy units burned by the WP grenade will not yield any raw intel, as their bodies turn to ash and cannot be searched.
At this time (1.2d) the WP only affects those that are caught by its initial detonation
The Willy Pete was, and is, used for Signalling, Screening, and Incendiary purposes. A versatile weapon, used to destroy enemy munition caches and disrupt the enemy directly through use of Incendiary use.