Millin saw further action with 1 SSB in the Netherlands and Germany before being demobilised in 1946 and going to work on Lord Lovat's highland estate. In the 1950s he became a registered psychiatric nurse in Glasgow, moving south to a hospital in Devon in the late '60s until he retired in the Devon town of Dawlish in 1988.
Millin participated in further operations with 1 SSB in the Netherlands and Germany before being discharged in 1946 and relocating to work on Lord Lovat's highland estate. In the 1950s, he became a registered psychiatric nurse in Glasgow, moving south to a hospital in Devon in the late '60s until retiring in the Devon town of Dawlish in 1988.