Complex sentence: Bruce later recognizes him as one of the few honest cops in the city and always remembers the kindness he showed Bruce as a child, and thus, after he becomes Batman, Gordon is the first person in law enforcement that Batman contacts.
Split into simpler sentences: Bruce later recognizes him as one of the few honest cops in the city and always remembers the kindness he showed Bruce as a child. After Bruce turns into Batman, Gordon is the first person in law enforcement that Batman contacts.