That was really bad. Way, way too much just popping caps. Excessively long bursts on the 249s will destroy them sooner than necessary, aside from the waste of ammo. Firing them essentially offhand is of no value. I saw two Grenadiers launch 40mm rounds with no clue where they might land, a number of riflemen firing multiple shots in rapid succession almost certainly really unaimed, at least one firing an M4 on full auto which is pointless...

Those folks definitely need some training. I can never understand why leaders allow that kind of loose and pointless firing. We don't do the basics well at all and our lack of fire discipline is the prime indicator. In defense of that unit, same thing occurs all the time and did in other wars. Control of fire is not one of our strong points; we waste a LOT of ammo...

Not enough info on the tactical situation to say much on that aspect, though I agree with most of what you say as generically good.