Explaining on Instagram: "In the 1960s, the U.S. military deployed one of the most terrifying weapons ever built: the M67 “Zippo” flamethrower tank. 🔥😳 Instead of a main cannon, the tank fired pressurized jets of burning fuel that could engulf bunkers, forests, and fortified positions in seconds. The flames were so intense and psychologically devastating that its use sparked serious ethical debates, with critics arguing it bordered on inhumane warfare. Although never officially b