I am helping my dad get a copy of my grandpa’s WWII Navy military records. I have found some of his Navy Muster logs through Fold3. Branch of service says USNR. We had never heard that he was in the reserves, was this a common branch of service for the people in to fight the war to go into? Could this stand for something else during that time? There are many choices to send for papers and I don’t want to have to wait 6 months and find out I mailed to the wrong place. Do we send the request to the reserves or to just the navy?