Even Animals Needed Gas Masks in World War I

There was nothing more terrifying in the trenches than the call of a gas attack — “GAS! GAS!” This warning cry sent men scrambling for their masks as the poisonous fog enveloped them. Soldiers succumbed to the strangling effects of chlorine, phosgene and mustard gas for years as the stalemated armies searched for news ways to defeat each other.

During World War I, more than 90,000 soldiers died on all sides from gas attacks, which debilitated many more. And it wasn’t just human combatants who suffered — many military working animals died from chemical weapons.

The Deadliest Aircraft in the U.S. Military's Arsenal You Have Never Heard Of

In a military that operates Raptor stealth fighters, A-10 tank busters, B-52 bombers and Harrier jump jets, the U.S. Navy’s placid-looking E-6 Mercury, based on the 707 airliner, seems particularly inoffensive. But don’t be deceived by appearances. Though the Mercury doesn’t carry any weapons of its own, it may be in a sense the deadliest aircraft operated by the Pentagon, as its job is to command the launch of land-based and sea-based nuclear ballistic missiles.