Anyone interested in writing about their experiences could benefit from joining a creative writing workshop. There is usually one around nearby. There are charitable organisations that aim to promote reading and writing - the Scottish Books Trust recently ran the "Days Like These" essay project to collect short narratives based on personal experiences. Workshops can identify such opportunities.
There is a lot of talent out there and it doesn't have to be Bravo Two Zero stuff. George MacDonald Fraser's recollections - Quartered Safe Out Here and the McAuslan series - are amongst the best, and his experiences were probably typical of his generation.
A compilation of military short stories and recollections could raise a lot of money for Service charities. Authors should be rightly protective of their own work as well though.