So, on 24 March OTL Rommel's first moves captured El Agheila, which wasn't very well covered by the British.
Historically Rommel's intelligence told him that the British were weak and withdrawing. Here, I am presuming that his intelligence is telling him the opposite, and so there is a much more circumspect reconnaissance in force. The British have, here, their main line at El Agheila, but Ras el Ali was one of the places where a half decent forward defensive position could be established. In the OTL fighting against the Italians when they invaded, the 7th Armoured Division and Support group did something similar, having delaying positions ahead of the main line of resistance.
Allan