[13] As 21st Army Group's breakout from the beachhead got under way, A and B Trps were sent forward on 22 August to defend Troarn and Falaise, while a section of A Trp provided lighting for Royal Engineers (RE) working parties.

[13][15] It then made a diversion to Le Havre where it provided artificial moonlight for the attack by I Corps on the night of 10/11 September (Operation Astonia) –when it proved particularly valuable for ensuring safe passage through gaps cut in the minefields – and then lighting for the continued fighting in the town and docks.

[13][16][17] While C Trp went to the newly captured bridge at Nijmegen, the rest of the battery assisted at the Siege of Dunkirk.

In mid-November most of the battery relieved 344 and 356 S/L Btys at Nijmegen where the two vital bridge were under regular attack from the air and from frogmen with explosive charges, so that searchlights had to sweep the river as well as the sky.

[13][20][21] For the rest of 1944 and into January 1945, the battery remained at Nijmegen, under 74th AA Bde in First Canadian Army, with A Trp detached to Grave.

[30][32] Nor did the battery entirely give up its AA role: on the night of 26 March it engaged a formation of three aircraft and claimed one Category B 'kill' with 20mm gun fire.

Meanwhile, A Troop deployed detachments as infantry in daytime to protect the flanks of the supply route to the advancing Canadians.

Its detached Troops rejoined Battery HQ (BHQ), and all 24 S/Ls were used to illuminate the huge Prisoner of war concentration guarded by 2nd Canadian Division.

[29] During the operation the battery provided artificial moonlight for XXX Corps' forming up areas, while half a squadron of CDLs of 49th APC Rgt illuminated the assault crossing on 23/24 March and engaged the enemy on the far bank with their 75mm guns.

Guards Armoured decided to cloak its area in darkness, to hinder the scattered Germans from reorganising, so B Trp thickened up the lighting for 51st (H) Division.

Sergeant H. Wilson took over, applied first aid to the casualties and saw to their evacuation, then went forward under fire to assess the extent of the damage, extracting the undamaged vehicles..

Daymond, a troop commander, was awarded a Military Cross for getting a section back into action after it had suffered casualties from a German self-propelled gun and small-arms fire.

[36] When 3rd Division assaulted across flooded country towards Bremen on 23 April, B Trp provided subdued light beams to indicate the axis of advance.

C Troop then deployed a section to assist an anti-tank battery tasked with anti-submarine watch on the approaches to the port.

582 Battery continued to provide fighting light for infantry attacks up to 3 May; 21st Army Group ceased fire on 5 May following the German surrender.