[Bob]

Since he only wrote US Navy under "Active Service" and "all years", I would assume only "all years" that he was in "Active Service" would be released. If he had wanted Reserve Service to be released, would he not have filled in that block as well? Also, his discharge would have been from Reserve Service, no?

That's the way I'm reading it as well. Yes, his final discharge would have been from the reserves; he was in the reserves for a number of years after his active duty ended.

[Just A Nobody]

...he was in the reserves for a number of years after his active duty ended.

IIRC...and I may not as it is very late, I thought he was only in the Reserves 2 years.