Are these two sentences correctly worded?

FYI- Tammith is Bareris's beloved. Before the aerial contingent departed, Aoth persuaded Bareris, who was determined to gain vengeance for Tammith’s transformation into a vampire, to join the forces that were going to be battling Szass Tam and his followers. At Bareris’s request, Aoth then assigned him to the Griffon Legion and provided him with a rider-less griffon.