IIRC, there is a book by a guy that jumped with the 82nd and he described the ammo distribution amongst the platoon for a 60mm mortar--it was an amazingly low amount of ammo (less than 20 rounds?).
I can't say this really surprises me. Since the airborne parceled out their
mortars one per platoon, you have to figure they were not intended to be used for concentrated fire (the "on-call" OBA that Chapter H talks about) the way other units used them. I have no idea how they
were intended to be used, but clearly it wasn't through suppression by massive amounts of shells fired.
For what it's worth, which is very little, here's some info from
Combat Mission: Beyond Overlord for comparison. I have no idea where it got its numbers, much less how accurate they are, but its designers usually seem to have done some research.
Their default loadout for the 60mm is 35 rounds; 2-5 smoke, the rest HE. The same is true for the Airborne units. However, if the Airborne carried less ammo than other units, I suspect CMBO would not bother modeling that, even if the designers were aware of it.
The 2-inch mortar in CW service was likely used more often for smoke than HE...
That interests me, since the CMBO loadout for same is 20 rounds, with only 1-3 of them being smoke. Of course, you of all people
know that... so I'm curious to hear what you think of it.
I do know that because it only has those 1-3 rounds, the darn thing is next to useless for making smoke in CMBO.
One thing that does become clear by playing CMBO, assuming it's even moderately close to reality: Even with the larger mortars that have a meaningful number of smoke rounds and larger area of effect per shell, there is no way in hell that a typical mortar in ASL should be able to lay more than one hex worth of smoke per fire phase, 3 ROF or no ROF.
Maybe the 107mm chemical mortar should be able to do it, given that it would have a relatively large area of effect per shell and a relatively large supply of smoke rounds available. But the 81mms have to use too many shells to cover a single hex-equivalent to be thinking about going for a second one, much less three or more.
John