Target-panic,
I would say the service records are the place to start. There was a fire and they lost a lot of them, unfortunately. The reocrds should show what medals he had or was entitled to. Replacements are available for some of them, or else there's eBay. Some medals are engraved around the dge with the recipients name or service number ...
I think you could put together a pretty decent itinerary or CV if you know which units he was with. You know the units, you can find pictures of the actions they were in. If the family has letters or a diary, those can be used to complete the picture.
good luck!
jn
ps: I'm Ok with researching but I'm just a hacker .. 5MF, Dick Hosmer, cii, now **those** guys really know their stuff.