A United States Army training film about defense against chemical warfare during World War I. The "Collective Protector" enables a general and the staff to work on their maps and orders without gas masks at the Division Headquarters. Two soldiers outside the headquarters wearing gas masks. They guard a low entrance doorway and enclosed tunnel with a heavy, flexible door designed to keep out gas. A soldier lifts the flap of the door and enters. Officers converse with each other while looking at a map on a wall. Soldier stands by rotating a handle on a device continuously. It has a long wide pipe connected to it, perhaps managing fresh air intake or air exchange. U.S. soldiers wearing gas masks load ammunition onto trucks. "Enemy" aircraft flies overhead throwing a cloud of poisonous gas that quickly envelops the area. A soldier wearing a gas mask fires his rifle into the air at the aircraft, through the heavy smoke screen. Gas sentries neutralize the gas around a dump. They dig in the ground with pick axes and mattocks, and then spread a white powder over the area. They then cover the area with a thin layer of the dirt they had dug up.
A United States Army chemical warfare service training exercise underway. A United States soldier fires a McBride gas gun. Smoke candles burn in a field with smoke surrounding the area.
A United States Army training film about chemical warfare service training. United States soldiers throw gas hand grenades (containing non-poisonous smoke) during a training exercise. Smoke rises in the grenade target area.
A United States Army training film about the chemical warfare service. White phosphorous hand grenades and rifle grenades used by soldiers during a training operation. United States soldiers throw white phosphorous hand grenades. Smoke rises in the surrounding area with explosions.
A United States Army training film about chemical warfare. United States soldiers fire artillery with 75mm shells to achieve a smokescreen. Explosions on the ground with smoke surrounding the area. The soldiers load and fire artillery.
Retired United States Army Major General Walter Campbell Short testifies before a Joint Congressional Committee investigating facts leading up to the Japanese attack on Pearl Harbor,December 7, 1941, and defends himself. Among the matters he mentions are the closely guarded secrets surrounding U.S. intelligence information concerning Japanese military and diplomatic communications (so-called "Magic"). At the end of his remarks, he gives thanks to the Committee for bringing out facts. Other officials seated around him listen to him. Some of those present applaud General Short, at the conclusion of his testimony. The officials stand after his testimony. (World War II period).
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