I have been listening to some of the letters sent during World War One as broadcast on the BBC World at One programme. One I have copied out for you as a stand alone letter.
'Written on a scrap piece of paper by Private Albert Ford to his wife Edith:
"My darling, if this should ever reach you it will be a sure sign that I am gone under and what will become of you and the chicks I do not know. But there is one above that will see to you and not let you starve.
You have been the best of wives and I loved you deeply, how much you will never know. Dear heart, do think sometimes of me in the future when your grief has worn a bit and the older children I know won't forget me and speak sometimes of me to the younger ones.
Dearest, if the chance should come your way, for you are young and good looking, and should a good man give you an offer it would please me to think you would take it, not to grieve too much for me.
I should not have left you thus bringing suffering and poverty on a loving wife and children, for which in time I hope you will forgive me.
So, dear heart, I will bid you all farewell, hoping to meet you in the time to come if there is a hereafter. Know that my last thoughts were of you in the dugout or on the fire step of my thoughts."
Albert was killed in action on 26th October 1917. His last letter was treasured by Edith until her death, she never re-married, and as she lay dying in February 1956 she said she could see Albert in the corner of her bedroom.'
https://www.bbc.co.uk/sounds/play/m00010yp (from 33.15). There follows another from wife Lil to her soldier husband Harry Lacey Nelson (from 35.04).