After the destruction of the Formics, the Jeesh were allowed to return home to Earth. Shortly after his homecoming, however, he was captured by the agents of Achilles de Flandres and held in Russia with the rest of the Jeesh.
Soon after he was rescued, Peter Wiggin sent him home. Since the Netherlands had no military, Dink was sent to Great Britain, where he was put to work in the Anglo-American League.
Shadow of the Giant
Eventually, he accepted Hyrum Graff's proposal to colonize another planet, and left on the second-ever colony ship, set to become governor of the planet when he arrived.
Dink was tough, and often took control of situations.
Throughout his military career at Battle School and later at Command School, he was close friends with Petra Arkanian.
He didn't believe that the Formics were coming back during his years in Battle School. That the draw of war with Formics was cover so humanity wouldn't fight among themselves. 
He viewed the Battle School teachers as enemies.
"[Ender] could walk between my legs without touching my balls!"