Just having a look at the last bit, usually MM=Military Medal but maybe not on both times in this letter? just using caps to show my changes:
R? S? my No 1 SGT (sergeant) JENNINGS m m of my Sah Section told me I was commended from the M. M. For the deed I had carried out and SAID I would hear about it later on, DEAR SIR I have not heard anything since that date and I am writing to ask you if you will please see into it for me I think it must have got delayed as I know my OC had quite enough on his mind that day and will YOU OBLIGE and let me know if i am entitled to have that honour until I receive it and OBLIGE.
I am your truly,
R. F. T. Shemen
13/28 R. F. C. E. 33 Pui
Present address
R. F. A. Shemen
13128
14 Con? Camp 3 Pui
L or K Company, HUT No 6
B E F
France