By all means Raggy do go on:

The time frame is set by the time Hollis and "the lad from Cannock" had served together. The most likely period according to the massive influx of recruits into the Army as a result of war breaking out WOULD BE anytime from August 1914 to December 1914. Eighteen months on (A detail specifically mentioned in the article) puts the alleged murder of this teenager from Cannock sometime between January 1916 and June 1916 - so as far as the article goes the time frame is both correct and logical.

Your latest:

1: 1/6th Battalion Territorial Force:
Feb 1916 Returned to France and the Division engaged in various actions on the Western Front including; The diversionary attack at Gommecourt.

Part of the initial stages of the Battle of the Somme July 1916 - so too late for the time frame.

2: 8th (Service) Battalion:
During 1915
The Action of Pietre. - September 1915 too early for the time frame defined by the stipulated eighteen month interval between joining up and the alleged incident.
During 1916
The Battle of Albert - July 1916 too late for the time frame; The attacks on High Wood - July 1916 too late for the time frame;
The Battle of Pozieres Ridge - July 1916 too late for the time frame;
The Battle of the Ancre Heights - October 1916 too late for the time frame;
The Battle of the Ancre. - November 1916 too late for the time frame.

3: 9th (Service) Battalion (Pioneers):
29.07.1915 Mobilised for war and landed at Havre and engaged in various actions on the Western Front including;
During 1916 The Battle of the Ancre. - This was the first action fought by this unit as part of the 37th Division - November 1916 too late for the time frame.

As I said please do go on - I can keep playing "Whack-a-mole" until the cows come home - the story still has too many holes to be believable.