job was less than thorough as at least one gun went back into action when the Germans later re-occupied the battery. Having completed the assault, the paratroopers gathered the German prisoners and their wounded and withdrew, having no wish to remain by the battery. The battalion possessed no radio and if no signal were received by the light cruiser HMS Arethusa, by 05:30, it would begin shelling the battery as a contingency. The paratroopers had achieved their primary objective, but at a heavy cost, with fifty dead and twenty-five wounded; a casualty rate of exactly fifty percent. The battalion then attacked Le Plein, securing the village by expelling the platoon-sized German garrison. The survivors retired to a planned rendezvous point at 05:30, the battalion too understrength to achieve its other objectives. Divisional HQ, Operation Mallard, and days end At 03:35, the 6th Airborne Division headquarters landed by glider in the landing-zone cleared by sappers. Only a few gliders missed the landing-zone, due to the poor weather and errors in navigation. Once the headquarters staff and accompanying airborne troops had been gathered together, the headquarters was moved to the Le Bas de Ranville area and set up there. Contact was established with the headquarters of 5th Parachute Brigade at 05:00, and with the headquarters of 3rd Parachute Brigade at 12:35, and the division linked up with 1st Special Service Brigade as it advanced from the invasion beaches at 13:53. At 21:00, Operation Mallard began. Mallard was the final wave of the 6th Airborne Division's landings and consisted of 220 Horsa and Hamilcar gliders, carrying the 6th Airlanding Brigade and other units. The gliders arrived at their landing-zone, coming under heavy small-arms and mortar fire from nearby German positions as they landed. Casualties were light and within ninety minutes the glider-borne troops had gathered at their rendezvous points. By 00:00 7 June, the entire 6th Airborne Division had been fully deployed on the eastern flank of the invasion beaches (with the exception of 12th Battalion, Devonshire Regiment – part of 6th Airlanding Brigade – that was due to arrive by sea on 7 June). The division ended the day with the 3rd Parachute Brigade holding a front, with 9th Parachute Battalion at Le Plein, 1st Canadian Parachute Battalion at Les Mesneil, and the 8th Parachute Battalion in the southern part of the Bois de Bavent. The 5th Parachute Brigade had the 12th