I just remember one of my mortar crews killing a Sdkfz 222 with their rifles one time. They deal the full 16 damage for whatever reason, and are operated bolt-action like k98s. I really wish they had carbines instead if I'm being honest, for historical accuracy purposes, but from a gameplay perspective let's just say I really appreciated their kar98 profile that game.
The main problem with the USF mortar (as well as it's main benefit) is it is a 240 manpower smoke dispenser. The AOE and scatter for HE shells are so terrible that the autofire is basically a writeoff and the barrage is only good versus structures (which is basically the only time you'll be using it.) As has been said before here, if Ostheer has a mortar of their own it's more or less at it's mercy, and probably much moreso with the new CB buff. Versus OKW you shouldn't be building it at all.
Basically, If you can avoid spending manpower on it, it's usually for the best; I've personally been trying to get nades earlier on and dish smoke out with the LT/CPT. Captain is especially useful versus MGs because of his veterancy ability "On Me!", which is one of the strongest utility abilities in the game, and 100% free. The downside is that's 15 fuel and 150mp to be able to spend muni most players are usually rushing to put on BARs.
Rifle Company is also a strong contender versus Ostheer MG setups, though Fire Up admittedly comes rather late. Combined with grenades, however, it can allow you to flank MG positions much easier, and wipe them out. The RE flamer is also useful but I personally don't go for it.
By the way, what is this thread even for, now that they've said they're done adding major changes to the patch?
Scatter values for auto-fire
ostheer
mortar_team_81mm_mp
Scatter
Scatter angle 10
Distance offset 0
Distance ratio 0.08
Distance max 8
USF
m1_81mm_mortar_squad_mp
Scatter
Scatter angle 10
Distance offset 0
Distance ratio 0.08
Distance max 8
pm-82_41_mortar_squad_mp
Scatter
Scatter angle 8
Distance offset 0
Distance ratio 0.1
Distance max 8
The USF mortar has incidental scatter with Ostheer one and superior to Soviet one. CAN WE now GIVE a REST PLS.