Whakaotihia te rerenga e whai ake nei: Ko te 1st Battalion, i te timatanga o te mahi ki te 25th Infantry Brigade i te 50th Division, i tukuna ki Parani i te timatanga o te 1940 ki te hono atu ki te toenga o te British Expeditionary Force. I whawhai te poari i te Pakanga o Dunkirk, a, i akina kia nekehia atu. Whai muri i a Dunkirk, ka uru te poari ki te 210th Independent Infantry Brigade (Home), i muri mai ka whakaingoa ano ki te 38th (Irish) Brigade. I whakauruhia te parirau ki te 6th Armoured Division ka mahi tahi me ratou i te timatanga o te Campaign Tunisian tae noa ki te 2 o Hui-tanguru 1943, i te wa i whakawhitihia ai me te 1st Guards Brigade o te 78th "Battleaxe" Division. Ka noho tonu te ope taua ki te wehenga mo te toenga o te pakanga, e mahi ana i roto i te
i te whawhai i Hicily, i reira te Irish Brigade i whawhai ai, me te angitu nui, i te Pakanga o Centuripe i Akuhata 1943. Ko te angitu i Sicily i whai ake i nga taunga ki te tuawhenua o Itari. I a ia e mahi ana i Itari, i uru te peihana ki te maha o nga whakawhiti awa me nga pakanga, ko te mea rongonui pea ko te Pakanga o Monte Cassino, tetahi o nga pakanga tino uaua o te pakanga katoa ka kite i to raatau pakanga whakamutunga i te Operation Grapeshot.