Prince Harry is in London to mark the Invictus Games. King Charles won't see his son on this trip.

A smiling Prince Harry waved to the crowd as he arrived for a church service at London's St. Paul's Cathedral ahead of the Invictus Games.

It was a rare public appearance for the fifth-in-line to the British throne who is in the United Kingdom to mark the 10-year anniversary of the annual international sporting event he founded for wounded, injured and sick servicemen and women, both serving and veterans.

Actor Damian Lewis, who portrayed military officers in both the TV series "Homeland" and the miniseries "Band of Brothers," recited a poem to the congregation — which did not include any other members of the royal family.