Mark Hifle - This looks like another missing British Soldier serving with the Irregulars.
3180223 Private T Johnstone, 2nd Battalion Kings Own Scottish Borderers,
9 April 1921 deserted while serving on Bere Island in western part of County Cork
3 May 1923 captured by Free State Army while serving with the Irregulars at Kealkill, a small village in West Cork, Ireland