The Kopp-Etchells effect was first documented during combat operations in Afghanistan. The photographer Michael Yon named the effect after two soldiers who died there, Koop, a US Ranger, and Etchells, a British soldier. Both were killed in combat in this province of Afghanistan.
Props to the photographer for naming the effect after the soldiers who lost their lives.
Pity the article has been getting Kopp's name wrong without correction for the last 10 years though, despite containing several other changes suggested by the photographer.
The spontaneous combustion part here feels bit weird; I imagine the phenomenon is more like when you hit metal with angle grinder and sparks fly out, where the abrasive action heats the particles up to ignition point. At least I wouldn't call that very spontaneous.
Props to the photographer for naming the effect after the soldiers who lost their lives.