Any books about non combat soldiers?

[musketshooter]

It is too bad that there is so little about the rear area forces. My father was in canon company 110 of the 28th Division. I have read every book I can find on the 28th and there is hardly any mention of the cannon company's attached . There were 3.
I do have a firing log from the 204th Field Artillery Battalion. The log begins on 12 July 1944 and ends on 8 May 1945. I contacted the Army History unit in Pennsylvania and they had no interest in getting it. Kind of a shame.