Among those with Harry was Sgt Duncan Slater, 34, from Muir of Ord in Scotland who lost both his legs in a blast in Afghanistan in 2009.
The former Dingwall Academy pupil has become the first double amputee to ski to the South Pole.
Harry says the Scot - who now lives in Norfolk with his wife Kim, 30, and daughter Lily, three - found it too easy.
Twelve injured servicemen and women from the UK, the US and the Commonwealth were on the walk.
The feeling is incredible." Harry previously backed organisers in calling off the race element of the walk for safety reasons.
Harry and his fellow Walking With The Wounded expedition competitors began the race in temperatures of -27ºC, with a wind chill dropping it to -35ºC - and those conditions continued.
But with the fear that competitors were pushing themselves too hard in the harsh conditions the race element was called off at the weekend - instead the three teams finished as one united group.
In Harry's Team Glenfiddich is RAF gunner Sgt Slater.
Sgt Slater was told by doctors that he would never walk again after being injured by a roadside bomb at Babaji in the Helmand Province of Afghanistan where he served with the RAF Regiment.