For anyone interested (like Flyingace1939) in the actual 25th Royal Fusiliers a.k.a. "The Old & the Bold", here's an OUTSANDING website that catalogues their movements & actions from 1915 to 1918 with subdivisions detailing each battle. An incredible
wealth of information.
Clicking the "HOME" button at the bottom brings you to even more: The men, the insignia, their formation and anything else you could ever want to know. The website's author, Steve Eeles, must be congratulated for his exhaustive amount of research!