Kammala jumla mai zuwa: 1st Battalion ya kasance rundunar Sojoji na yau da kullum da aka kafa a Colchester a farkon yakin a watan Agustan 1914. An sanya bataliya zuwa Brigade na 11, Rukunin na 4. Tare da sashin, bataliya ta shiga cikin Rundunar Sojojin Burtaniya kuma an tura ta zuwa Faransa a watan Agusta 1914, ta sauka a Le Havre a ranar 23 ga Agusta. 1st Battalion ya ga yaƙin farko da sojojin Jamus a
Le Cateau. (gidan sarauta) Bataliya ta yi aiki a Yammacin Yammacin Turai don sauran yakin, ta shiga cikin yaƙe-yaƙe da yawa a cikin 1914 kadai kamar Yaƙin farko na Marne, Yaƙin farko na Aisne, da Yaƙin Messines. A ranar Kirsimeti ta shekarar 1914, maza daga Bataliya ta 1 sun halarci wasan Kirsimeti na Kirsimeti na shekarar 1914 inda sojojin Birtaniya da na Jamus suka yi tarayya a cikin No man's land. A shekara ta 1915, rundunar ta shiga cikin Yaƙin Ypres na biyu, wanda ya shahara da amfani da iskar gas. A cikin 1916 ya yi yaƙi a Albert da Le Transloy, wanda ya kasance wani ɓangare na babban harin Somme.