James Churchill Dunn (24 February 1871 – 30 March 1955) was a British medical officer during World War I, and author.
[4] Dunn was born in 1871 in Churchill, near Auckland in New Zealand, although his father's family were originally Scottish and came from Rutherglen in Lanarkshire.
His parents were killed in the Te Kooti's War, a conflict between the Māori and European settlers, shortly after he was born and he was sent back to Scotland to be raised by his aunts.
Dunn enlisted in December 1899, volunteering for the Second Boer War as a trooper in the Montgomeryshire Yeomanry where he served for over a year, gaining a Distinguished Conduct Medal for bravery.
Towards the end of the war he served briefly as a civil surgeon with the army in South Africa, before returning to his medical career in London.