I'd go with Alex, Joe.

'Her' relates to 'kam geflogen' not to 'fuhr'. If you re-arrange the word order you get:

"Für ihn kam eine Kugel aus der 'Heimat' her geflogen." (hergeflogen?). That makes perfect sense to me.

BTW - 865 DIE GUTE KAMERAD is one of the DT songs missing a tune. Do I understand correctly that the tune in the DT for Hans Beimler is the same tune? It didn't sound like the one I think I remember from 30+ years ago.

Wassail! V