Called to action on 2 April 1982, the men of 45 Commando Royal Marines assembled from around the world to sail 8,000 miles to recover the Falkland Islands from Argentine invasion. Lacking helicopters and short of food, they yomped in appalling weather carrying overloaded rucksacks, across the roughest terrain. Yet for a month in mid-winter, they remained a cohesive fighting-fit body of men.