1915 May 27. enlisted Royal Irish Fusiliers (date from regimental number)
1915 Nov 4. disembarked with a draft at Salonika joined 5th (Service) Battalion, Princess Victoria's (Royal Irish Fusiliers), 31st Brigade in 10th (Irish) Division.
1917 Sep. Battalion moved to Egypt for service in Palestine.
1918 Apr 30. Battalion left the Division and sailed from Port Said, arriving Marseilles 27 May.
1918 Jul 23. Battalion came under command of 66th (2nd East Lancashire) Division.
1918 Aug 24. Battalion transferred to 48th Brigade in 16th (Irish) Division and absorbed 11th Battalion.
1919 Aug, re-enlisted as 33261 Private Michael Callan, Depot Princess Victoria's (Royal Irish Fusiliers) (date from regimental number)
1920 Aug 7, deserted from Royal Irish Fusiliers Depot at Armagh
1922 Jan 7. Medals returned