On the night of 1942 , the 2nd Battalion of the Rifle Brigade ( part of the 7th Motor Brigade ) , with thirteen 6-pounder anti-tank guns and the 239th Battery , 76th Anti-Tank Regiment RA , with six more 6-pounders , was ordered Arranging to occupy Control a desert feature known as Snipe , a small depression in the landscape south-west of Kidney Ridge that was suitable for an outpost .