In SOP it is always 3 groups - Gp 1, 2 & 3. But there's no reason why you can't split it into just 2 groups depending on requirement.Oops ... thought I fixed the typo You're right ... it's 3 groups.
In any case, I guess your unit has a different SOP then mine. We used to strip away "support" elements into ad hoc groupings all the time.
If you ask me, 2-man groupings is not ideal. There is simply not enough eyes, ears and firepower in a 2-man group. A 3-man group makes more sense. And in weaponry also make more sense:
- SAW gunner
- M203 gunner
- LAW gunner
In most situations esp CQB you need the 3rd man to cover the rear while the other 2 do the deeds that need doing.
But I guess it is easier to split them into 3 groups for flexibility of deployment and combine them into 2 when needed.
Most likely, the 3-group-per-section structure is a leftover from the old days of 9-men sections. SAF reduce the number of men per section but kept the 3-group structure.
So what type of unit were you from that always detach the SAW gunners? Because to me, that dangerously depletes the firepower of the assaulting elements.