As the world gears up for the royal wedding between Prince William and Kate Middleton on April 29th, William's little brother Harry is stealing some of the spotlight for himself -- for a good cause.

Harry covers the May issue of British GQ in honor of his upcoming North Pole trek with "Walking with the Wounded", a team of wounded British soldiers who aim to be the first amputees to reach the pole and raise 2 million pounds (3.2 million dollars) for charities that focus on the rehabilitation of British ex-servicemen and women.

The trek starts later this week and the team aims to finish no later than April 26th -- in time to get Harry back home for his brother's wedding, of course. Experts put the team's chances of succeeding at 40 to 60 per cent.

But Harry, a patron of the team, is not daunted by the task. "This extraordinary expedition will raise awareness of the debt that this country owes to those it sends off to fight - only for them to return wounded and scarred, physically and emotionally," he told the mag. "The debt extends beyond immediate medical care and short-term rehabilitation. These men and women have given so much. We must recognize their sacrifice, be thankful, so far as we can ever repay them for it."