I think the allocation of heavier weapons is determined by logistics requirements, system costs and C2/massing.

Since it lacks oversight the squad should have only direct fire weapons (especially when using the German system) - GPMG, automatic rifle, IWs. I'm not sure about the use of UGLs here. Probably not in regular units.

The platoon can handle the light support weapons that are not always needed - RPG, MGL. Here weapons are still handled by just one man.

Company level adds 80mm mortar and man portable guided missile crews, esp light ATGMs.

Such a setup, btw, probably favours light IW (like MP7) as standard equipment, since the weapons crews can carry those in addition to their main weapons, can support the rifles once their heavy stuff is gone, and are already equipped for missions that do not require their special weapons. Up to company level every man should be able to handle every weapon.


On the issue of APC/IMV/MRAP and IFV weaponry, I'd say for APCs and pure IFVs anti-infantry weapons (30cal, 40mm grenade launcher, &c) only.

But then if you go towards cavalry fighting vehicles/light-to-medium-tanks - all based on IFVs - some 25/30mm autocannon/heavier ATGM combo-turrets, 120mm mortar turrets, 40/57mm autocannon turrets (I think a tank-installed Mk110 could be interesting), SHORAD turrets.

I'm not sure how far into MBT territory a cavalry fighting vehicle should go, but mounting a 120mm gun like on the CV90120 I think is over the top and might lead to wrong tactical utilization.