Allied Operation Cobra, during World War II. United States infantry,tanks and other vehicles advance from Lessay through the war-torn town of Periers, on their way to Coutances, France. U.S. infantrymen (probably 90th Infantry Division) and armor of the 4th Armored Division, including M4(105) howitzer medium tanks and M4 medium tanks (part of Operation Cobra) move past a road sign that reads "PĂ©riers". At top of signpost, another sign reads: "Road cleared of mines to hedges." The tanks turn right (South) in front of the damaged Periers church, as they pass through town on their way toward the city of Coutances.
Military police guard German prisoners of war in vicinity of Periers,France, during World War II. German prisoners rest along wall in courtyard of a building. Some prisoners sleep over ruins of buildings. Military police guard them. Prisoners being marched to trucks and loaded, packed tightly onto open trucks. French women on bicycles stop and make fun of the German prisoners Damaged buildings seen in the background. Sherman tank of 4th Armored Division drives past bomb-damaged church. Road sign points along Route 71 to next town (Coutances) and end of route (coastal city of Granville).
As part of Operation Cobra, elements of United States 2nd Armored Division with infantry, tanks and armored vehicles enter Canisy, France during World War II. Views of soldiers loaded on tanks, armored vehicles and trucks. (Troops in half-track wear the rare camouflage uniforms distributed mainly to the 41st Armored Infantry Regiment of the 2nd Armored Division.) German prisoners of war march along side of road, guarded by U.S. soldier.
New techniques in aerial torpedo attack, United States. An aircraft in flight over a sea. The aircraft releases torpedo in water. Torpedo moves. Men haul trolley loaded with the torpedo. The shroud ring or ring tail is in conjunction with the drag ring on nose of the torpedo. Using ring tail and drag ring with wooden stabilizer results in successful test drops. A man secures the stabilizer to ring tail with wooden dowels. The man covers the torpedo with a drag ring which helps to stabilize the torpedo during air travel, and seals the ring. The man adjusts the water trip delay valve which prevents the torpedo from burning up during long travels. Depth setting is done. (World War II period).
New techniques in aerial torpedo attack, United States. A Grumman TBF Avenger aircraft parked at an airfield. Men load torpedo onto the aircraft. The propellers start. A man signals as the aircraft taxis and takes off from the airfield. The aircraft in flight over a sea. The aircraft releases torpedo in water. (World War II period).
New techniques in aerial torpedo attack, United States. A man explains the graphical presentation of the proper speed and altitude combination for torpedo release. An aircraft in flight releases torpedo in water. The torpedo moves in water. The torpedo launching guide. In double entry type graph, the combination of 2 coordinates gives the third coordinate. Dropping speed and dropping altitude data is entered in the chart. It gives the entrance angle. The man explains the concept of point of release to the point of hitting target using the graph. The cross wind effect on torpedo drop is explained. Time column on graph gives time of fall of torpedo. Release of torpedo with proper range is necessary. Radar ranging requires teamwork between the pilot and the radio man. Demerits of long and short range is explained. (World War II period).
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