From early July, the battery was regularly called upon to send detachments to provide 'artificial moonlight' for troops in forward areas. This was a new technique being developed to reflect light off the cloudbase to provide 'movement light' (also known as 'Monty's moonlight') in support of night operations. 344th and 356th Independent S/L Batteries pioneered this technique using their mobile 90 cm searchlights.Routledge, pp. 314, 317. 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'.Martin, pp. 66–9.
