You don't have Arkiv Digital at the moment, do you?
They haven't lost his age in the column next to the fold; he was 23 1/2 at the muster, and had served for 9 1/2 years (which is visible in the SVAR version as well). So he was basically a child soldier "volunteer" to begin with. He served as a piper. Presumably he served during the campaign in Pomerania, and did not have a home "rote" until he followed the regiment back to Västerbotten.
Of course it isn't easy, but pretty exciting, I think.