[well, at least during the Second World War it was. MOST SECRET is the analog of the American TOP SECRET.]
Thanks here to the Jungle Trader and the BBC:
Another secret weapon - - never used, found to be unfeasible and probably ineffective. But considered as a "possible". And the thought behind such a weapon was similar to the mentality surrounding the neutron bomb of the 1980's? Kills people, but leaves structures intact and unscathed?
"WWII poison darts secret emerges"
"Top secret War Office papers have revealed a strange and macabre weapons project tested by the Allies during World War II."
Flechette weaponry, WW2 style. But flechettes with a tip of mustard agent. A CHEMICAL ROUND!!
"Lethal clouds of tiny poisoned darts were to be tipped with mustard gas to kill enemy troops without damaging nearby buildings or equipment."
"clouds of poison darts, blasted from canisters high above the battlefield, could be even more lethal against enemy troop concentrations than high-explosive shells."
"Mustard gas compounds in the needles would ensure anyone whose skin was broken would die a swift and horrible death, or at least have terrible injuries."
Tested on sheep and goats. The way the weapon wounds and kills a sheep or goat is very similar to the damage that would be done to a human. Sheep in particular have long been a favorite subject for weapons testing.
"sheep and goats [were dressed] in two layers of battledress material and positioned them across a wide area, some in trenches, to be exposed to the killer darts."
This "needle" - - this flechette, IS AN ILLEGAL WEAPON AS CONCEIVED? A "diabolical" weapon causing UNNECESSARY SUFFERING!! NOT ONLY a weapon causing injury by penetration, but POISONED AS WELL!!
The allies HAD considered the use of chemical munitions during WW2. DID NOT use, but seriously considered. The Japanese of course made4 extensive use of chemical munitions in China both prior to and after [??] Pearl Harbor - - The German at least on two occasions using lethal gases during military operations in eastern Europe.