Hi Megan !
Heres a bit of background to the Royal Irish regiment ...
In World War I, the Royal Irish Regiment raised a total of 10 battalions from the pre-war two regular and two reserve battalions. The additional battalions included two service battalions in Kitchener's First and Second Armies, a battalion formed in 1917 from the dismounted South Irish Horse, a further service battalion and two Garrison Battalions. The regiment won 42 battle honours and one Victoria Cross, but lost 2,780 men as casualties.
The 1st Battalion was in Nasirabad, India in 1914 and embarked at Bombay on 19 Oct 1914, arriving at Devonport, moving to Winchester as part of 82nd Brigade in 27th Division. In December 1914 it went to France and Flanders. In November 1915 it was redeployed to Salonika on the Macedonian front in 30th Brigade of 10th Division. In Sep 1917 it withdrew to Egypt and ended the war in Palestine.
The Royal Irish Regiment's service in World War I was marked by the following battle honours:
France and Flanders: Mons; Le Cateau; Retreat from Mons; Marne 1914; Aisne 1914; La Bassee 1914; Ypres 1915; Gravenstafel; St Julien; Frezenberg; Bellewarde; Somme 1916; Albert 1916; Bazentin; Delville Wood; Guillemont; Ginchy; Messines 1917; Ypres 1917; Plickem; Langemarck 1917; Somme 1918; St Quentin; Rosieres; Arras 1918; hamel; Albert 1918; Drocourt-Queant; Hindenburg Line; Epehy; Canal du Nord; St Quentin Canal; Beaurevoire; Cambrai 1918; Ypres 1918; Courtrai; Pursuit to Mons; France and Flanders 1914-1918.
Macedonia: Struma (1916); Macedonia 1915-1918.
The Dardenelles: Anzac; Suvla; Landing at Suvla; Gallipoli 1915-1916.
Egypt: Egypt 1915-1917.
Palestine: Gaza; Jerusalem; Jordan; Tell 'Asur; Palestine 1917-1918.
Disbandment
In 1922, on the creation of the Irish Free State, in common with five other Irish infantry regiments of the British Army, the Royal Irish Regiment was disbanded.