Twenty-eight had been withdrawn, broken and exhausted, to quieter areas. Eleven more had been withdrawn to rest-billets. Under the Allies’ artillery fire and infantry attacks the average life of a German division as a unit fit for service on the Somme was nineteen days. More than two new German divisions had to be brought into the front-line every week since the end of June, to replace those smashed in the process of resisting the Allied attack. In November it was reckoned by competent observers in the field that well over one hundred and twenty German divisions had been passed through the ordeal of the Somme, this number including those which have appeared there more than once.