Sub-series consists of records created and/or maintained by the 5th Army Troops Company, Canadian Engineers, and document many aspects of its activities.
Volume 4425 includes the following files:Method of destruction, depots, bombs, skills, grenades, 14-21 Oct. 1917 (folder 1, file 1); Scheme of work to be undertaken by a battery to obtain cover, Feb. and April. 1917 (folder 1, file 2); Badges and patches, 12-24 Aug. 1918 (folder 1, file 3); Instructions re bridging, Sains les Marquion, 6 Feb. - 6 Nov. 1918 (folder 1, file 4); Instructions re burials and cemeteries, 22 July 1918 (folder 1, file 5); Notes on camouflage screen, July 1917 (folder 1, file 6); Drawings of First Army musketry camp at Matringhem, Dec. 1917 - 22 March 1918 (folder 1, file 7); Notes on construction of Seaview Camp, 20 Feb. - 26 Aug. 1918 (folder 1, file 8); List of work for Chinese Labour Companies 22 - 23 July 1918 (folder 1, file 9); First Army instruction re defences, 7-13 April 1918 (folder 1, file 10); Construction of (German) positions by Gen. Dixt Von Armin, 30 June - 18 Aug. 1917 (folder 1, file 11); Maps and blueprints, 11 July - 19 Aug. 1918 (folder 1, file 12); Discipline: field punishment, etc. 28 July 1917 - 4 Dec. 1918 (folder 1, file 13); Dumps, Haute Ville, 11 Oct. 1917 - 24 July 1918 (folder 1, file 14); Machine gun (Champagne Type) and trench mortar emplacements, June 1917 - Aug. 1918 (folder 1, file 15); Notes on explosives, 6 April 1917- 13 Nov. 1918 (folder 1, file 16); Notes on demolition of British field works, 24 Aug. 1917 - 31 Oct. 1918 (folder 1, file 17); German field works, 15 Aug. 1917 - 6 June 1918 (folder 1, file 18); Report on gas skill bombardment of Cyprus, precautions against gas, new German report on gas, 11-18 Aug. 1917 (folder 1, file 19); Machine and Lewis guns, 9-12 March 1918 (folder 1, file 20).
Volume 4426 includes the following files: Army books containing correspondence, etc, re. pay, leave, billets, location of stores and materiel, nominal rolls of officers, bridging equipment, location, small arms ammunition, claims, work reports, working parties, casualties, clothing, distribution returns of labour, denomination, location returns, remounts, vehicle return, strength return, personnel, rations, postings, bridging, transport, 16 April 1918 - 15 Jan. 1919 (folder 2); Honours and awards, 30 Nov. 1917 - 18 Jan. 1919 (folder 3, file 1); Nissen Bow Huts, bell tents, 20 July 1917 - 14 Jan. 1918 (folder 3, file 2); Engineers instructions, 29 Oct. - 4 Nov. 1918 (folder 3, file 3); Intelligence, 1 Jan. - 1 June 1918 (folder 3, file 4); Maps showing tramways proposals, corps boundaries, enemy organization etc., 27 Sept. - 29 Oct. 1918 (folder 3, file 5); Reports on mines and booby traps, 8 Sept. - 30 Oct. 1918 (folder 3, file 6); Mobilization, 2 April - 28 June 1917 (folder 3, file 7); Moves and reliefs, 2 Sept. - 2 Nov. 1918 (folder 3, file 8); Engineers instructions re Bourlon Wood operations, 25-26 Sept. 1918 (folder 3, file 9); Information re Canal du Nord operations, 23, 24 Sept. 1918 (folder 3, file 10); Instructions re Cambrai operations, 6-7 Oct. 1918 (folder 3, file 11); Instructions re Drocourt-Quéant line operations, 28 Aug. - 1 Sept. 1918 (folder 3, file 12); Organization of a regimental sector, 18 July 1917 (folder 3, file 13); First Army circular letter re railheads, 10 Aug. 1917 (folder 3, file 14); Nominal rolls of reinforcements, 5 Sept. - 25 Oct. 1918 (folder 3, file 15); Sketch of horse standings, 18 Aug.-31 Oct. 1917 (folder 3, file 16); Report on crates, 8 Nov. 1918 (folder 3, file 17); Salvage vats in oil factory, 28 June - 22 July 1918 (folder 3, file 18); Economy in sandbags, 6 Nov. 1917 (folder 3, file 19); Drawings of latrines, ablution bench baths, 26 April - 28 Sept. 1918 (folder 3, file 20); Analysis of signal traffic, 8 Sept. 1918 (folder 3, file 21); Detail of oil drum, 17 Aug. 1917 (folder 3, file 22); German Elfriede tanks, 1 June 1918 (folder 3, file 23); Educational scheme, 8 March 1918 (folder 3, file 24); Transfer of 5th Army Troops Company to VIII Corps, 5 May 1918-19 Jan 1919 (folder 3, file 25); Notes on mined trenches and dugouts, 16 Aug. 1916-April 1917 (folder 3, file 26); Specifications for water supply, 25 April 1917 - 13 Oct. 1918 (folder 3, file 27); Details of work and working parties, 19 April - 28 Oct. 1918 (folder 3, file 28).