If this is true, and I am not doubting you, it would strongly suggest that the USMC has no clear idea as the relative effects and benefits of the weapons in the platoon. The UK certainly has the same problem, because it has focussed on loading up 3 sections, with identical fire teams, and wants to treat the "section as a platform."
This problem will persist as long as we train folks "how do things" and not "why to do things."
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