Up to this point, you've only claimed that "this group" or "that group" carries hanguns. That wasn't my question.
As previously stated, I was a jet engine mechanic. But when I was going to be temporarily deployed, I was qualified on both the M9, the M1911, and even a fam-fire course with the Remington 870.
If you had ANY military experience at all, you'd know this. But you don't. You are just some stupid little troll trying to stir the pot.
Every soldier I mentioned is part of the overall force, there are no special "crew served weapons" brigades, or special "medic" brigades, these aren't "groups" as you refer to them. They are part of the MTOE of a light infantry platoon, as are the Platoon Leader and Platoon Sergeant. The Mortermen are part of the light infantry Company MTOE.
Just like there are 2 grenade launchers in the "average" infantry squad, these positions are all "average" in that they will all be present for duty and will engage the enemy.
You have confused "average" with lowest common denominator, IMO.