4 Engineer Support Regiment

Note:

4 Engineer Support Regiment's date of origin is not traced to the formation date of the '59th Independent Field Squadron, RCE' (see below) as lineage is traced from the formation of unit, not sub-unit, sized organizations, ie. regiments and battalions.

During the regiment's return from service with NATO in Germany it existed as two organizational identities, with separate designations, from 4 September 1992 to 30 September 1993.^{Footnote 5}

4 Field Engineer Squadron originated in Petawawa, Ontario on 1 August 1951, when the '59th Independent Field Squadron, RCE' was authorized to be formed.^{Footnote 6} It was redesignated: '4th Field Squadron, RCE' on 16 October 1953;^{Footnote 7} '4 Field Squadron' on 30 April 1958;^{Footnote 8} and '4 Field Engineer Squadron' on 21 May 1975.^{Footnote 9} The squadron was reorganized as a regiment and designated '4 Combat Engineer Regiment' on 17 June 1977, as above.

Notes:

The 59th Independent Field Squadron was formed as an Active Force unit to train and administer replacement personnel for the 27th Canadian Infantry Brigade Group for service in Germany.^{Footnote 10} It was embodied in the Special Force on 1 March 1953 for service in Korea.^{Footnote 11} It was removed from the Special Force on 1 November 1953.^{Footnote 12}

No lineal connection with '4th Field Engineer Squadron' embodied in the Reserve Force as a sub-unit of 3rd Field Engineer Regiment.