| 10.8.14: | 1st West Riding Brigade (1/5th, 1/6th, 1/7th and 1/8th West Yorks) of 1st West Riding (Territorial) Division concentrated at Selby |
| Aug-Apr: | Trained at Strensall and York, followed by a period of duty on Lincolnshire coast. | |
| 14.4.15: | Entrained for Boulogne via Folkestone, arriving late that night. |
| 18.4.15: | Merville. First glimpse of trench warfare, attached for instructional purposes to 7th Division. |
| 22.4.15: | Brigade moved into billets in La Gorgue as Army Reserve Brigade, HQ in Laventie. |
| 12.5.15: | 1st West Riding Brigade became 146th Brigade, 49th (West Riding) Division |
| 14-15.5.15: | Moved to Festubert |
| 31.5.15: | 49th Division joined the Indian Corps (with 8th, Meerut and Lahore Divisions) |
| 1.7.15: | Billeted at Proven |
| 7-13.7.15: | 2m NE of Ypres |
| 14.7.15: | Algeria Farm |
| July-Nov: | In and out of line, N of Ypres. |
| 27.9.15: | 1/5th WY posted a notice boasting of prisoners taken at Loos, which provoked a sally by incensed Germans. |
| October: | Hohenzollern Redoubt the scene of bitter fighting |
| 19.12.15: | In line at Ypres: heavily gassed |
| 1.1.16: | Billeted at Wormhout. |
| 29.1.16: | 146th Brigade MGC formed. |
| 1.2.16: | General Plumer, with words of regret, relinquished command of 2nd Army. |
| 1-2.2.16: | 1/5th detrained at Longeau (Amiens) and marched to Ailly-sur-Somme. |
| 10.2.16: | Into reserve line for 1/8th at Thiepval. |
| 8.3.16: | Billeted in Harponville. |
| May-June: | Rest in Vignacourt |
| Mid-June: | Moved to Puchevillers |
| 30.6.16: | Avelut Wood, in readiness for attack. |
| 1.7.16: | The attack on Thiepval |
| 3.8.16: | 1/5th left in reserve, as other Battalions go into Leipzig Salient. |
| 18.8.16: | 146th Brigade comes out of line, to Lielvillers; week's training in Acheux Wood area. |
| 26.8.16: | Advance to the Ancre. 1/5th now at 20 officers and 438 other ranks; less than half now were Yorkshiremen. 1/5th remained at Gordon Castle, except D coy, which crossed the Ancre at 0200h to set up cover for other units advancing on Thiepval at 0510h. |
| 3.9.16: | Relieved: to Malincourt Wood. |
| 25.9.16: | 1/5th in Brigade Reserve, Martinsart Wood. 146th Brigade left in the line, under GOC 18th Division, while remainder of 49th Division relieved. |
| 26.9.16: | Thiepval fell to 54th Brigade (18th Division) and, two days later, 1/5th WY attacked the Schwaben redoubt. |
| 1.1.17: | 1/5th and 1/7th Training, at Bouque Maison. Lieut.-Col. H. D. Bousfield now 1/5th CO. |
| 11.2.17: | Into line at Ransart (relieving 21st Brigade of 30th Division) |
| Feb-July: | A 'quiet period' of duty in the Laventie/Fauquissart sector, as in 1915. |
| 13.7.17: | 146th Brigade began entraining at Estaires for the Fort Mardyck area, Belgian coast. |
| 14.7.17: | Brigade in camps amongst the sand dunes SW of Dunkerque, for a week on coast defence |
| 17.7.17: | Ordered instead to the Coxyde-Oost Dunkerque area. |
| 18.7.17: | Into right sector (St. George's) of front line at Nieuport (relieving 96th Brigade of 32nd Division). |
| 2.8.17: | 146th Brigade, relieved by 96th Brigade, moved via the Coxyde area to Ghyvelde |
| 3.8.17: | Moved to the Uxem-Teteghem area for training and to act as working parties |
| 28.8.17: | Brigade (less 1/6th Battalion) moved to Ghyvelde |
| end September: | Divisional attack practices |
| 1.10.17: | 49th Division moved towards Ypres, to participate in the offensive known as 3rd Ypres - or Passchendaele. 49th Division attached to II ANZAC Corps. |
| 9.10.17: | Division heavily involved in the advance on, or 'Battle of', Poelcapelle. |
| 28.10.17: | 1/5th at Steenvorde East |
| 8.11.17: | Moved to Swan |
| 11-15.11.17: | Into the line at Broodseinde, on left of 1/7th. Relieved by 1/6th and 1/8th. |
| 23.11.17: | Acting as working parties. Lieut.-Col. W. Oddie now 1/5th CO. |
| 19.12.17: | In Halifax Camp as Reserve Battalion. |
| Jan-Mar: | Holding the line, Broodseinde. |
