Changes

*[https://archive.org/details/cheerfulsacrific0000nich ''Cheerful Sacrifice : the Battle of Arras, 1917''] by Jonathan Nicholls 1990. Archive.org Books to Borrow/Lending Library. April-May 1917.

*[https://archive.org/details/pillarsoffirebat0000pass ''Pillars of Fire : the Battle of Messines Ridge, June 1917''] by Ian Passingham 1998. Archive.org Books to Borrow/Lending Library.

*[https://archive.org/details/brigadierinfranc00cumm/page/n7 ''A Brigadier in France 1917-1918''] by Hanway R Cumming [1922] Archive.org. He was in command of the 110th Brigade, 21st Division.

*[https://archive.org/details/storyoffourtharm01mont ''The Story of the Fourth Army in the Battles of the Hundred Days, August 8th to November 11th, 1918''] by Major-General Sir Archibald Montgomery, General Staff, Fourth Army 1919 Archive.org.

:[https://archive.org/details/voicesfromfronto0000hart/mode/2up ''Voices from the Front : an Oral History of the Great War''] by Peter Hart 2015.

:All Archive.org Books to Borrow/Lending Library.

====Generals and Army Headquarters====

*[https://archive.org/details/privatepapersofd0000haig ''The private papers of Douglas Haig, 1914-1919: being selections from the private diary and correspondence of Field-Marshal the Earl of Bemersyde''] edited by Robert Blake 1952 Archive.org. There was a subsequent selection of papers (with more emphasis on Haig’s military role), ''Douglas Haig: War Diaries and Letters 1914-1918'' edited by Gary Sheffield and John Bourne 2005, the latter book based on the manuscript version of the diaries (Blake’s used the typescript).<ref>[https://web.archive.org/web/20181220103221/http://thediaryjunction.blogspot.com/2018/01/haigs-unique-wwi-diaries.html Haig’s ‘unique’ WWI diaries] The Diary Review.</ref>