The north coast of the Island did not generally receive as much fortification as the other coastlines. The exceptions were those bays which had a sandy beach or harbour. Whilst Grève de Lecq was not considered big enough to support an large scale Allied landing like St Ouen’s Bay, it was nonetheless felt to be a bay that would be attractive to a commando attack. So the Germans set about fortifying the bay as Strongpoint Grève de Lecq.
A bunker either side of the bay was constructed in which a 10.5cm and a 7.5cm gun were housed respectively. An anti-tank gun was placed in the centre of the bay and the old Conway Tower was strengthened and armed with two twin anti-aircraft MG 34s. A French Renault tank turret was mounted on the harbour pier and other mortars, flame-throwers, machine guns and searchlights completed the armaments. A garrison of 34 officers and men were stationed there.