JonS was referring to the name given to anyone in the MOS of Artillery. I'm aware the the US Army doesnt have gunner for a rank. I'm assuming in the army they call anyone on a gun crew a "Gunner". In the USMC anyone with the Artillery MOS is a CANNONEER. Yes the USMC has gunners as a rank which they did away with back in the late 80's however, they brought back that rank as of 2 yrs ago (2003).
Regarding the 105MM, I was the A-chief for my gun and we conducted many direct fire missions using Line of Sight. As posted previously by the battery Commander, an experienced crew is invaluable. My experience using the gun sights for direct fire is, after the 3rd or 4th time having done this type of firing, you become very effective at it.
Combat Mission needs to model the command for the number of rounds you can fire for a fire mission. i.e. "Fire mission, 6 rounds, shell HE" or "expend all remaining" when the situation gets desperate.
As far as the patterns modeled in CMxx, I suspect the WWII gun crews fired rather sloppy patterns due to the conditions they operated in. However, with a forward observer present, I think the patterns should get tighter the more they fire based upon the corections radioed in by the FO.
My 2cents worth.
0811