 344th and 356th Independent S/L Batteries pioneered this technique using their mobile 90 cm searchlights.It was first used operationally to assist the assembly of troops for Operation Greenline on the night of 14/15 July, when the drivers of 15th (Scottish) Division 'found the light a great help to them in finding their way up the pot-holed track through the blinding dust'.On 22 August, as the Allied breakout from the Normandy beachhead got under way, A Troop was withdrawn from its sites and attached to 71st Light AA Regiment for the drive to the Seine.