MASSED RAIDS [Main Title]

Log in to create clips, download free screeners and save clips/films in Collections. Click here to find out more.


  • Title: MASSED RAIDS [Main Title]
  • Film Number: AMY 118
  • Other titles:
  • Summary: RAF instructional film illustrates the practical use of echo location.
  • Description: Animated diagrams and a commentary explain how mass numbers of aircraft are counted by means of echo responses emitted from CH (Chain Home) stations. As formation of enemy planes cross the Channel to attack Britain, targets appear on a screen and are interpreted. Actual filmed record of this system in operation on 25 August 1940 and 26 September 1940 show the packed formations of enemy planes (as recorded by targets on the screen) split up into separate sections as the air battles reach their height. After the battle, only a few targets remain.
  • Access Conditions: IWM Attribution: © IWM
  • Featured Period: 1939-1945
  • Production Date: 1941
  • Production Country: GB
  • Production Details: B T-H Research Laboratory (Production company) Telecommunications Research Establishment (Production company)
  • Personalities, Units and Organisations: Royal Air Force (regiment/service)
  • Keywords: equipment, British air - surveillance: echo location (object name) intelligence, military, British - reconnaissance: echo tracking (object name) Animation (concept) Instruction (concept)
  • Physical Characteristics: Colour format: B&W Sound format: Sound Soundtrack language: English Title language: English Subtitle language: None
  • Technical Details: Format: 35mm Number of items/reels/tapes: 1 Footage: 850 ft; Running time: 9 mins
  • HD Media:
  • Notes:
  • Link to IWM Collections page:

    AMY 118

  • Related IWM Collections Objects:
Register