Changes

** ''A History of the Army Ordnance Services, Volume III: The Great War'' by Major General Arthur Forbes 2nd edition 1932, first published 1929. [https://archive.org/details/in.ernet.dli.2015.274726 Archive.org version], mirror from Digital Library of India. Includes chapters on the Base in the Levant and Mediterranean [Egypt]; Palestine.

**[https://www.nzsappers.org.nz/wp-content/uploads/2018/11/Corps-History-Vol-06.pdf ''History of the Corps of Royal Engineers, Volume VI: Gallipoli, Macedonia, Egypt and Palestine 1914-18''], edited by H.L. Pritchard, published 1952. Note: Volume VI does not include information about Signals as "The history of their work is being produced by the Royal Corps of Signals themselves"<ref>michaeldr. [https://www.greatwarforum.org/topic/251301-royal-engineers-soldier-abandoned-in-gallipoli/?do=findComment&comment=2538402 Royal Engineers soldier abandoned in Gallipoli] ''Great War Forum'' 29 June 2017. Retrieved 12 December 2018.</ref>. nzsappers.org.nz

*:[https://archive.org/details/65-re/page/n9/mode/2up ''65 R. E.. A Short Record of the Service of the 65th Field Company Royal Engineers''] by Alan Colquhoun Duff 1920. The Company served at Gallipoli, in [[Salonica and the Balkans (First World War)|‎Macedonia]] and in Palestine.

*:''Report on the work of the Seventh Field Survey Company R.E. Egypt, Sinai, Palestine & Syria. December 1916 to October 1918''. [https://www.defencesurveyors.org.uk/historical-papers Historical Papers: Defence Surveyors' Association] Scroll down. [https://fc061d25-33f8-4c65-840c-8ca5bf36650e.filesusr.com/ugd/b9208c_3ab0f671f5f14cebb2b3e2a26c324f4b.pdf Direct pdf]. Elsewhere, source of this document is given as Directorate Military Survey, Feltham, UK, and the report date is from December 1915. 2nd reference is unpublished report by W J Maule, Commanding Officer, to GSGS Map Research and Library Group, DMS Tolworth 1919.