Pinetree Line

Reserve Aircraft and Warning Units


2405 Aircraft Control and Warning Unit
Halifax, Nova Scotia


2405 Aircraft Control & Warning Unit (Reserve) was located at Halifax, Nova Scotia and was formed on 1 May 1950. 2405 AC&WU was tasked to "train radar and communications personnel in all aspects of air control and warning procedures and to maintain and operate radar and communications facilities as directed the Group Commander Maritime Group". The unit converted to Auxiliary status on 1 November 1951. On 1 March 1952, 2405 AC&WU became the responsibility of Air Defence Command though they still worked closely with Maritime Group.

The unit reached Squadron status on 1 December 1953. Narrative reports on the Pinetree Line web site confirm that 2405 AC&W Squadron was active at RCAF Station Beaverbank, NS, during the years 1954 to 1961 inclusive. There is also evidence of deployment to RCAF Station Foymount in 1953, RCAF Station Mont Apica in 1957 and 1959, RCAF Station St. Margarets in 1958 and 1959, as well as RCAF Station Lac St. Denis in 1952.

On 31 August 1961, 2405 AC&W Squadron was disbanded as Auxiliary AC&W Squadrons were no longer required due to the SAGE system coming on line.



Click on the description text to view the photograph.
  1. Historical Narrative - 1 June 1961 to 31 August 1961.
    Courtesy National Archives of Canada.

  2. Organization Order R2.0.1 - 26 April 1961.
    Courtesy National Archives of Canada.

  3. Historical Narrative - 1 December 1960 to 31 May 1961.
    Courtesy National Archives of Canada.

  4. Historical Narrative - 1 June 1960 to 30 November 1960.
    Courtesy National Archives of Canada.

  5. Historical Narrative - 1 December 1959 to 31 May 1960.
    Courtesy National Archives of Canada.

  6. Historical Narrative - 1 June 1959 to 30 November 1959.
    Courtesy National Archives of Canada.

  7. Historical Narrative - 1 December 1958 to 31 May 1959.
    Courtesy National Archives of Canada.

  8. Historical Narrative - 1 December 1957 to 31 May 1958.
    Courtesy National Archives of Canada.

  9. Historical Narrative - 1 June 1957 to 30 November 1957.
    Courtesy National Archives of Canada.

  10. Historical Narrative - 1 December 1956 to 31 May 1957.
    Courtesy National Archives of Canada.

  11. Historical Narrative - 1 June 1956 to 30 November 1956.
    Courtesy National Archives of Canada.

  12. Historical Narrative - 1 December 1955 to 31 May 1956.
    Courtesy National Archives of Canada.

  13. Historical Narrative - 1 June 1955 to 30 November 1955.
    Courtesy National Archives of Canada.

  14. Organization Order R2.0.0.1 - 28 December 1954.
    Courtesy National Archives of Canada.

  15. Historical Narrative - 1 December 1954 to 31 May 1955.
    Courtesy National Archives of Canada.

  16. Historical Narrative - 1 June 1954 to 30 November 1954.
    Courtesy National Archives of Canada.

  17. Historical Narrative - 1 December 1953 to 1 June 1954.
    Courtesy National Archives of Canada.

  18. Organization Order 83/53 - 19 November 1953.
    Courtesy National Archives of Canada.

  19. AMES-11C antenna overlooking Bedford Basin in Halifax - June 1953.
    Courtesy Terry Pineau.

  20. Organization Order 24/52 - 3 April 1952.
    Courtesy National Archives of Canada.

  21. Ivan Mark (CAE) working on the lowered IFF antenna - May 1951.
    Courtesy Ivan Mark.

  22. Frank Watts (CAE Team Leader) at the back of the radar antenna - May 1951.
    Courtesy Ivan Mark.

  23. A DND inspector is tugging at a selsyn cable - May 1951.
    John Livick, CAE, watches with interest.
    Courtesy Ivan Mark.

  24. Ivan Mark, with a bad haircut, is tense during the second day of DND inspections - May 1951.
    Courtesy Ivan Mark.

  25. An RF unit with Lecher bars is open on the top of the "doghouse" during a DND inspection - May 1951.
    John Livick, CAE, looks apprehensive. Facing away from the camera is Frank Watts, CAE Team Leader.
    Courtesy Ivan Mark.

  26. The convoy was accepted by the DND - May 1951.
    (L-R_ John Livick, Frank Watts, Tom Smalley and Jerry Lyman in a relaxed mood.
    Courtesy Ivan Mark.

  27. The IFF equipment cabinet - May 1951.
    Starting at the top: Display unit, antenna control unit, transmitter-receiver ad power supply. To the right and left are spare chasses and a signal generator, all awaiting storage. To the left of the antenna control unit is hanging what looks like a hefty "American Beauty" 100W soldering iron.
    Courtesy Ivan Mark.

  28. Unidentified "local tresspasser" under the radar antenna - May 1951.
    Courtesy Ivan Mark.

  29. Organization Order 4/50 - 25 February 1950.
    Courtesy National Archives of Canada.



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Updated: October 9, 2004