Britain's Catherine, Duchess of Cambridge, smiles as she arrives for a visit to the Royal Marsden hospital in Sutton
Britain's Catherine, Duchess of Cambridge, smiles as she arrives for a visit to the Royal Marsden hospital in Sutton, southern England September 29, 2011. REUTERS/Paul Hackett Reuters

After months of hard work, Prince Harry finally launched the Invictus Games with a moving military-themed ceremony to celebrate the sacrifices made by the injured servicemen and women around the world. Together with Prince Charles, Camilla Parker-Bowles and Prince Williams, the 29-year-old royal made a touching speech as he felt humbled by the athletes' journey to recovery.

"'I can't even begin to imagine how challenging the journey to recovery is," Harry said in his speech in front of 6,500 spectators at the Queen Elizabeth Olympic Park in east London on Sept. 10. "Their stories are as amazing as they are unique. You can be sure that everyone who makes part will be giving it their all and there is no doubt lives will be changed this weekend."

Missing from the event is William's wife, Kate Middleton who is currently suffering from acute morning sickness (hyperemesis gravidarum). Kensington Palace announced early Wednesday that the Duchess is not well enough to attend the event and join the rest of the members of the Royal Family.

Cracking up on his jokes, the Duke of Cambridge was photographed laughing with the Camilla Parker-Bowles during the launching of Invictus Games. The Duchess of Cornwall was also seen wiping away tears of laughter as she shared something to Kate's husband while sitting next to Prince Charles.

The royals together with the thousands of spectators and 400 warriors from 13 different countries were treated with a spectacular show including a performance from Red Arrows doing a precision fly-past. Singer Laura Wright was also there as she performed "Invincible," a song especially written and recorded for the game.

Invictus Games chairman Sir Keith Mills also made a speech as he tells the audience the amazing journey of the athletes and how Prince William conceived the sporting event. With tens of thousands of spectators, Mills hoped that the games will inspire more people around the globe.

U.S. First Lady Michelle Obama's special video message was played to the audience. She revealed the meeting the injured warriors are of the most inspiring moments of her as a First Lady. She also applauded the family and caregivers of the injured men and women for their love and support.

Prince Harry's Invictus Games kicked off on Sept. 10 and will end on Sept. 14 with 13 participating countries. These countries include Denmark, Estonia, U.S., France, New Zealand, Iraq, Australia, and Italy.