The Race2Recovery team is trying to complete the Dakar Rally to raise funds for Help for Heros.
The charity is raising funds for the Tedworth House recovery and rehabilitation centre in Wiltshire.
The two US Marines involved with the race are also raising funds for the Heros Project which supports injured service men and women in America.
More top news
Rail companies could be made to inform delayed passengers of their compensation rights via train announcements.
The British arm of the retail chain earned 7.7 billion in sales in 2015.
The Canadian government has settled thousands of refugees fleeing conflict in Syria.