Here's his marriage in 1940 in Effin Co Limerick.https://civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1940/08852/5201170.pdfHe's a soldier in the Irish Army stationed in Dublin.KG
Otherwise, as a WW2 soldier his service record is still held by the Ministry of Defence and can be applied for https://www.gov.uk/get-copy-military-service-records His regiment and unit do not have to be known or indeed his service number as long as there is a date of birth
QuoteOtherwise, as a WW2 soldier his service record is still held by the Ministry of Defence and can be applied for https://www.gov.uk/get-copy-military-service-records His regiment and unit do not have to be known or indeed his service number as long as there is a date of birthSurely not. No British Army in Dublin in 1940!