A Loos, a watan Janairu da Fabrairun 1916, an gabatar da rukunin zuwa yakin basasa kuma ya sha wahala sosai a yakin Hulluch. Ma'aikata sun kai hari kan sansanin Jamus a cikin watan Mayu da Yuni. A ƙarshen Yuli an tura su zuwa kwarin Somme inda suka tsunduma cikin yakin Somme. Laftanar Janar Hubert Gough, kwamandan Sojoji na Biyar na Burtaniya, ya nemi, a ƙarshen 1915, a sanya sashin a ƙarƙashin ikonsa, kuma ya kafa makarantar farko ta farko don horar da matasa. Rukunin na 16 ya taka muhimmiyar rawa wajen kama garuruwan Guillemont da
Ginchy, ko da yake sun sha wahala babbar hasara. A lokacin wadannan ayyukan nasara tsakanin 1 da 10 Satumba asarar rayuka sun kai jami'ai 224 da maza 4,090; duk da wadannan asarar da suka yi yawa, sashin ya sami suna a matsayin dakarun tashin hankali na farko. Daga cikin jimillar mutane 10,845, ya yi asarar 3,491 a kan Loos tsakanin Janairu da ƙarshen Mayu 1916, gami da asarar rayuka masu yawa daga harin bam da harin gas a Hullach a watan Afrilu. Rashin jini na wannan tsari ya zama mummunan hali ga rabuwa, domin dole ne a yi shi ta hanyar zane daga Ingila.