Airstrike with incendiary bombs during World War II, Germany 1945 (in color)

The first recorded strategic use of napalm incendiary bombs occurred in an attack by the US Army Air Force on Berlin on 6 March 1944, using American AN-M76 incendiary bombs with PT-1 (Pyrogel) filler. The first known tactical operation was by De Havilland D.H.98 Mosquito FB Mk.VIs of No. 140 Wing RAF, Second Tactical Air Force on 14 July 1944, which also employed the AN-M76 incendiary in a reprisal attack on the 17th SS Panzergrenadier Division „Götz von Berlichingen“ in Bonneuil-Matours. Soldiers of this Waffen SS unit had captured and then killed a British SAS prisoner-of-war, Lt. Tomos Stephens, taking part in Operation Bulbasket, and seven local Resistance fighters. Although it was not known at the time of the air strike, 31 other POWs from the same SAS unit, and an American airman who had joined up with the SAS unit, had also been executed.
https://en.wikipedia.org/wiki/Napalm
http://nation.time.com/2013/04/11/napalm-a-true-american-tale/