|No. 1 Commando, No. 6 Commando, One and a half Royal Marine battalion, Armoured Regiment, Motor Battalion, Landing Ship, Infantry (Medium) H.M.S. Princess Beatrix and H.M.S. Queen Emma. Their mission is to attack the coast defence guns at the entrance to the river, a T.N.T. factory, and a small aircraft factory, in addition to the the port facilities and to disrupt road and rail transport between France and Spain, at the Adour Estuary, France.|
The Commando assault force embark the two Landing Ship, Infantry (Medium) H.M.S. Queen Emma and H.M.S. Princess Beatrix on March 31st, 1942. The convoy spends a few days off the French coast disguised as Spanish merchant ships. On April 5th, 1942, the ships approach the mouth of the Adour estuary, where the assault force would land. However, amid severe weather, they encounter a sandbar that is not expected, and the convoy is unable to pass it. The commander decides to call off the raid and the convoy returns to Great Britain.