Complex sentence: The Bijapur Sultan promptly dispatched a large army and captured Vellore Fort, later both the Madurai-Bijapur armies converged in Gingee defeating the Vellore-Tanjore forces.
Split into simpler sentences: The Bijapur Sultan promptly dispatched a large army and captured Vellore Fort. Later both the Madurai-Bijapur armies converged in Gingee, defeating the Vellore-Tanjore forces.