Collins launched a general assault on 22 June. Resistance was stiff at first, but the Americans slowly cleared the Germans from their bunkers and concrete pillboxes. Allied naval ships bombarded fortifications near the city on 25 June. On 26 June, the British elite force No. 30 Commando also known as 30 Assault Unit launched an assault on Octeville – a suburb to the south west of Cherbourg. This was the location of the Kriegsmarine naval intelligence HQ at Villa Meurice which the Commandos captured along with 20 officers and 500 men. On the same day the 79th Division captured Fort du Roule, which dominated the city and its defenses. This finished any organised defense. Von Schlieben was captured. The harbor fortifications and the arsenal surrendered on 29 June, after a ruse by Allied officers, Capt Blazzard and Col Teague, who convinced the German officers to surrender the peninsula, bluffing about their manpower and ordnance. Some German troops cut off outside the defenses held out until 1 July.