The Royal Inniskilling Fusiliers

Battalions of the Regular Army

1st Battalion
August 1914 : in Trimulgherrey, India.
Recalled to UK and landed at Avonmouth on 10 January 1915.
10 January 1915 : came under command of 87th Brigade in 29th Division. Moved to Rugby.
March 1915 : sailed, going via Egypt, and landed at Cape Helles, Gallipoli, on 25 April 1915.
January 1916 : evacuated from Gallipoli to Egypt.
18 March 1916 : landed at Marseilles for service in France.
5 February 1918 : transferred to 109th Brigade in 36th (Ulster) Division.

2nd Battalion
August 1914 : in Dover. Part of 12th Brigade in 4th Division. Moved to Norfolk.
Landed at Le Havre 22 August 1914.
6 December 1914 : transferred as GHQ Troops.
26 January 1915 : transferred to 5th Brigade in 2nd Division.
22 July 1915: transferred as Army Troops to Third Army.
8 November 1915 : transferred to 14th Brigade in 5th Division.
24 December 1915 : transferred to 96th Brigade in 32nd Division.
3 February 1918 : transferred to 109th Brigade in 36th (Ulster) Division.

3rd (Reserve) Battalion
August 1914 : in Omagh. Moved on mobilisation to Lough Swilly and in September 1914 to Londonderry. Absorbed the 4th and 12th (Reserve) Bns in April 1918 and moved to Oswestry in England.

4th (Extra Reserve) Battalion
August 1914 : in Enniskillen. Moved on mobilisation to Lough Swilly and in October 1914 to Buncrana. Had a period in 1916 in Clonmany but returned to Buncrana. Absorbed the 3rd (Reserve) Bn in April 1918.

Battalions of the Territorial Force

As the Territorial and Reserve Forces Act of 1907 did not call for the creation of TF units in Ireland, the regiment had no TF battalions.

Battalions of the New Armies

5th (Service) Battalion
Formed at Omagh in August 1914 as part of K1 and came under command of 31st Brigade in 10th (Irish) Division. Moved to Dublin and by early 1915 was at Kildare. Moved to England April 1915, going to Basingstoke.
Landed at Suvla Bay, Gallipoli, on 7 August 1915.
28 May 1918 : left the Division and moved to France.
19 July 1918 : transferred to 198th Brigade, 66th (2nd East Lancashire) Division.

6th (Service) Battalion
Formed at Omagh in August 1914 as part of K1 and came under command of 31st Brigade in 10th (Irish) Division. Moved to Dublin and by early 1915 was at Kildare. Moved to England April 1915, going to Basingstoke.
Landed at Suvla Bay, Gallipoli, on 7 August 1915.
2 May 1918 : left the Division and moved to France.
7 June 1918 : transferred to 43rd Brigade in 14th (Light) Division.
18 June 1918 : transferred to 103rd Brigade in 34th Division.
29 June 1918 : transferred to Lines of Communication.
16 July 1918 : transferred to 151st Brigade in 50th (Northumbrian) Division.

7th (Service) Battalion
Formed at Omagh in October 1914 as part of K2 and came under command of 49th Brigade in 16th (Irish) Division. Moved to Tipperary and in August 1915 Finner Camp. Landed in England in September 1915 and went to Woking.
Landed in France in February 1916.
23 August 1917 : amalgamated with 8th Bn to become 7/8th Bn.
22 April 1918 : reduced to cadre strength after taking heavy casualties.
17 June 1918 : transferred to 102nd Brigade in 34th Division.
26 June 1918 : transferred to GHQ Troops, and re-established with men from 8th Rifle Brigade.
3 July 1918 : transferred to 89th Brigade in 30th Division.

8th (Service) Battalion
Formed at Omagh in October 1914 as part of K2 and came under command of 49th Brigade in 16th (Irish) Division.
Record same as 7th Bn.
23 August 1917 : amalgamated with 7th Bn and ceased to exist.

9th (Service) Battalion (County Tyrone)
Formed at Omagh in September 1914 from the Tyrone Volunteers (included two companies of Volunteers who had already joined the 5th and 6th Bns.). Came under orders of 3rd Brigade, Ulster Division and moved to Finner Camp.
2 November 1914 : formation renamed 109th Brigade, 36th (Ulster) Division. Moved to Randalstown in January 1915 and on to Ballycastle in July 1915. Moved to England and went to Bordon in early September 1915.
Landed in France in October 1915.

10th (Service) Battalion (Derry)
Formed at Omagh in September 1914 from the Derry Volunteers. Came under orders of 3rd Brigade, Ulster Division and moved to Finner Camp.
Record same as 9th Bn.
21 January 1918 : disbanded in France, most officers and men being posted to 2nd Bn.

11th (Service) Battalion (Donegal and Fermanagh)
Formed at Omagh in September 1914 from the Donegal and Fermanagh Volunteers. Came under orders of 3rd Brigade, Ulster Division and moved to Finner Camp.
Record same as 9th Bn.
21 January 1918 : disbanded in France, most officers and men being posted to 9th Bn.

12th (Reserve) Battalion
Formed in Enniskillen in April 1915 as a Reserve Bn. Moved to Ballyshannon in June 1915 but went to Newtownards in August 1915. Moved back to Enniskillen in december 1915 and in 1916 to Finner Camp.
Absorbed by 3rd (Reserve) Bn in April 1918.

Other Battalions

13th (Service) Battalion
11 June 1918 : the 11th Garrison Guard Bn, which had been formed in France, was renamed 13th (Garrison) Bn. Attached to 119th Brigade, 40th Division.
13 July 1918 : renamed 13th (Service) Bn.