* I understand conceptually that some units are best at short vs medium vs long range. Are screen prints or video guides available to demonstrate what exactly constitutes short vs medium vs long range?
* Is it ever a good idea to charge infantry to a position directly near any enemy units? For instance, if a German pioneer is capturing a point is it good to rush up next to them? Does getting close improve accuracy or killing power in general?
* Is there some kind of trick to machine gun suppression? British mgs seem to be not very good about catching units running through their arc of fire, which is substantially different from my experience trying to attack German mgs.
1.Submachine guns, the game's prominent close-range weapons, have their DPS maximized at range 10. Other weapons, not made for close-range, tend to have to be closer than that to maximize their DPS. As the range of infantry small arms is 35, range 10 is a bit under a third of infantry's maximum range. Another note, cover doesn't work against small arms within range 10 (though buildings
do).
Medium-range weapons tend to have their "medium-range" defined as starting a little bit under the halfway point of infantry small arms' total range.
While I don't know any visuals, I do know of a chart if you want to get into the nitty-gritty numbers for it.
https://docs.google.com/spreadsheets/d/1LOYMDi_XR7rILsk6HbAZqGihsk22t-45C_6NbQEP-m0/edit?pref=2&pli=1#gid=0
2. Yes, in pretty much all cases, getting closer will improve a full-health infantry unit's DPS. However, the specific light machine gun sort of weapons actually lose DPS from closing in so a squad with an LMG down to half of its members or some squads with two LMGs may be better off standing their ground if the intent is sheer damage.
In your example, Pioneers' weapons are basically equivalent to their faction's Grenadiers' rifles up close, while having a very poor DPS curve that suffers quickly from distance to their enemies like most SMG weapons. Unupgraded Pioneers are pretty much guaranteed to lose against the unupgraded basic infantry of the Soviet Union and United States Forces factions - Conscripts and Riflemen respectively - at any range with remotely equal health, and so if some lone Pioneers are trying to take an important point from you while you have one of these units nearby, feel free to charge them in to ensure the point stays in your hands longer. Otherwise though, those infantry units might as well keep away from them to ensure they will take as little damage as possible while doing as much as they can.
3. No, the Vickers' heavy machine gun just overall has the lowest average suppression out of all of the heavy machine guns and fires a long burst to perform that suppression which can take it critical portions of a second longer to suppress squads even out of cover. The weapon is not one you're best off taking your chances with leaving alone outside of a building, try to ensure it has spotters or is garrisoned.