 Over the following six months, up to 75 per cent of these men would be deployed to reinforce 21st Army Group following the completion of their training and certification of fitness.For example, those eligible for overseas service from the 9th Battalion, Worcestershire Regiment, were transferred to 21st Army Group.The battalion was then tasked with training those who were considered unfit, re-training soldiers who had recovered from wounds, and training men from anti-aircraft units to become infantry.