Guardsman Khaki Beret Backing Cap

Im curious and wondering what's that Red thing behind the crest of the Guards beret?

Only 7th SIB personnel have the red crest backing on their berets.

why?

The red backing was in recognition of them being somewhat different from other infantry units.

It contained the 3 Guard units and the Commandos for a short period of time.

But that was many moons ago. A bit of SAF history for you.

I see. Thanks.