S.A.S. jeeps were notoriously loaded down for desert warfare. Water and fuels needed to always be carried along as well as ammo and other essential gear. We also see the extent of the damage to the now unusable cannon emplacement.
Here we see our other guy signaling down to to other troops the emplacement is indeed knocked out.
It's hot and dry, these guys just wanna get back in the shade.
The leftover ammo adds a suspicious air to the scene. Fortunately, this jeep is armed to the teeth.