A soldier may not be the idea of Michael that people wish to have, but the characterisation given by Barrie in "Courage", "Neil and Tintinnabulum" and "The Boy David" has never seemed fully real to me as by May 1921 Michael was no longer a boy but a young man.
Around this time of course there were a number of literary figures who followed a military or near military career. Apart from the war poets like Owen, Graves and Brooke there were Winston Curchill, George Orwell, Evelyn Waugh, T.E. Lawrence, Saint-Exupery and no doubt many others. Here's old soldier W.S. Gilbert's thoughts on the command structure:
In enterprise of martial kind
When there was any fighting,
He led his regiment from behind
(He found it less exciting).
The London Scottish archive has some photos of this period and I hope to look at them before Cristmas, to see if Michael appears in any.