Complex sentence: When calamity struck the family fortunes, Vorenus was forced to re-enlist with the Legion, with the added prestige of being one of the evocati--a move Vorenus did not wish to take, but did so for the good of his family.
Split into simpler sentences: When calamity struck the family fortunes, Vorenus was forced to re-enlist with the Legion, with the added prestige of being one of the evocati. This was a move Vorenus did not wish to take, but did so for the good of his family.