United States Naval vessels underway at sea before the invasion of France during World War II. A fleet of Naval vessels underway in the far background. Explosions occur at sea as water splashes. A United States Navy YMS (Auxiliary Motor Minesweeper) underway at sea as it detonates mines. Mines detonated and explosions occur.
United States Navy Patrol torpedo boats underway in British waters before the invasion of France during World War II. Bow of a United States PT boat as it patrols along with others. Men on the deck of the boat. A 50 caliber machine gunner. U.S. Army Air Forces C-47 aircraft towing Horsa gliders at medium altitudes overhead, while C-47s without gliders fly in the opposite direction at very low altitudes over the water.
A training film about marine mine planting, created before World War 2. Group of mine planting vessels consisting of a planter (The "General J.M. Schofield"), a DB (Distribution Box) boat and three motor boats, are seen underway in Delaware Bay. Members of 12th Coast Artillery Mine Planter Battery, on the planter vessel, attach cable to a loading wire and then connect the cable to the bale of the number 10 mine with a galvanized wire. Mine and anchor lowered over the edge of the planter. Mooring rope attaches the mine with the anchor. End of the cable attached to the DB boat. Men look over the edge of the planter as the mine is lowered into the water. Cable loosened over the stern of the planter. An animation shows the correct way of releasing of coil from a figure of eight.
Pre-World War 2 training film contains animated description about control and operation of a mine field containing deep planted mines in domestic coastal waters. It shows observing stations on the shore sighting mine positions and that information being translated to a plotting board in a control room. Illustration of vessel being targeted by a controlled mine. Views of mines being tested against obsolete warships. Illustration of submerged submarine with planted mines in the vicinity. A mine explosion. Several battleships underway.
Shows the first atomic bomb explosion in history, on July 16, 1945, resulting from the work of the Manhattan Project. Atomic bomb tested at an experimental station in New Mexico, United States. Bomb explodes and a mushroom cloud forms, seen from cameras 6 miles away. Smoke and fire emerges. (World War II period).
Mine laying operations by Nazis in North Sea. Guns at the bow of a German ship. Men drop mines in the water. Enemy aircraft in flight charge in for an attack. German troops on board the ship fire antiaircraft guns to counter the Allied air attack. Mine laying operations continue. (World War II period).
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