Sorry it has taken so long to respond. The service records of those who served in WW2 are not yet in the public domain. However as a next of kin you can apply for a copy of the service records from
Army Personnel Centre
Kentigern House
65 Brown Street
Glasgow
G2 8EX
T: 0141 248 7890
It may be an idea to ring them first, you will find them very helpful.
Best regards