author
A Scottish chaplain and reflective wartime writer, known for a vivid account of life among soldiers during the First World War. His best-known book blends personal observation, sympathy, and quiet moral seriousness.

by Innes Logan
Innes Logan is best known for On the King's Service: Inward Glimpses of Men at Arms, a work first published in 1917. Public-domain editions identify him as The Rev. Innes Logan, M.A. and describe him as a chaplain to the forces during the First World War.
That background shapes his writing: rather than focusing only on strategy or battlefield spectacle, he writes about the inner lives of soldiers, the strain of service, and the human side of war. His work has lasted largely because it offers a personal, humane perspective on military life from someone who served close to the men he observed.
Reliable biographical detail beyond that is hard to confirm from the sources I found, so it is safest to remember him chiefly through this one surviving wartime book and the thoughtful voice it preserves.