The service file for Lionel Bridson is held at the Australian Archives. Google Australian Archives, go to family research, go to NAMESEARCH and put in Bridson. There are 86 files on various Bridsons and Lionel turns up at about 25. I don't think his records have been digitised but you can request it for quite a small fee. If you have trouble, contact: dibanks at bigpond.net.au. Good luck