Prince Harry climbed into the cockpit of a Spitfire and started the engine during a visit to the Boultbee Flight Academy in West Sussex this afternoon.
He was there to lend his support to the launch of a flight scholarship for injured ex-servicemen.
More top news
The soldiers who trained there left their names and messages on the walls of the tunnels.
Researchers were shocked to find the so-called Sussex Declaration hidden away in a record office.
The Hollywood star reportedly looked like he "switched into superhero mode" as he chased the suspect near his home.