Definition
Military slang for white phosphorus munitions, which burn at extremely high temperatures and create distinctive white smoke. Named with the military's trademark understated charm for something that can burn through metal and flesh.
Example Usage
We're dropping willie pete to mark the target for the air strike.
Origin
Phonetic alphabet rendering of 'WP' (white phosphorus), dating to World War II era
Fun Fact
White phosphorus is technically legal for use as an obscurant or marker, but its use against personnel is controversial under international lawβa distinction that keeps military lawyers very busy.
Source: Artillery and ordnance terminology
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