I wonder if IR 179 quickly needed replacements and he was transferred before his Gebirgsjaeger training got going. He must have had some problems later in life with all those leg wounds.
Here's a link to IR 179 Infanterieregiment 179 - Lexikon der Wehrmacht it's in German. I'm sure if you enter the other units he served in you'll find more info about his war.
They may have. My cousin told me he still went on hikes later in life though. I believe the war had a deep effect on him psychologically though. Family said he wasn't the same after the war.