To get an idea of Harry's situation in the grand scheme of things, it is worth following the link to the Battalion's War Diary.
As you can read in today's letter, Harry is in C Company. Their movements are mentioned from time to time in the Diary. It may help to put Harry's letters into context if the dates are considered.
September 23rd 1917.
I have received your letter and I got the cigs alright. You did not mention about the mug you had got for Willie it will be very nice. I will tell Ethel he has to use it. The raid you read about in the papers was made by our Battalion. B Coy went over and we, no 12 platoon C. Coy stood to. It was made to get a prisoner or two, to get information which they did, they lost one man and two wounded, it happened about five one morning. I got a slight wound in the face with shrapnel but not much it is alright now, I did not go to the doctor. There as been a big advance this last day or two but I have been left out. We get left out in turns.we are expecting our Coy out tonight. We have some rough times out here but I think the Germans have it rougher. We have to make the best of it. I should be glad when it is all over. John Bull watched us march past just over a week ago on our way to the trenches. I think we were the best batt in the Brigade, well in the division. I am pleased you’re keeping well and that they are keeping well at home. The rations have been very low lately, four and five to a loaf and small loaves too, that is the days bread. Write back as soon as possible, I’m always pleased to get a letter from you. Kate keeps sending me a small parcels which come in very nice, I hope she gets on alright at her fresh situation. I’m just going to write to Ethel.
With best love