Hi Don
well if you did want to give the German short 75mm guns their smoke rounds, heres how you could do it using the classes that already exist.
The panzer 3n as used in the tiger formations.
These have their own class (129) unused in any other Countries OOB I believe adding the smoke for class 129 is on your todo list amyway.
pz3m AFAIK wasnt used as a CS tank in tiger coys and so probably shouldnt be in class 129.
The 2 short 75mm armed 8 wheelers (sdkfz 233 and 234/3 units 591, and 074) appear in 3 formations 071 "PzSpaehZug (sw)", 218 "PzAufkl-UstZg", 229 "PzSpaeh Trp(sw)"
Ignoring formation 229, 071 and 218 are virtually identicle so we could leave all the other 'gun' 8 wheelers in 071 and remove them from 218 leaving just the 2 75mm armed ACs in 218. Then put 233 and 234/3 into class 104 CS Cruiser Tank and make Formation 218 select its vehicles from class, 104.
This gives these vehicles their smoke, though they are now called 'CS Cruiser Tank's, small price to pay. In the British OOB the M3 (105) halftrack is also misnamed a 'CS cruiser tank' for the same reasons. possibly the class could be remamed 'CS vehicles' or similar.
251/9
For 251/9 Its CS class 127 "Gun APC tracked" (containing only 2 251/9s) would need to have smoke added to non 0 units, same as the CS tank class. In the other OOBs this means you may need to move vehicles out of class 127 into class 125, 'Gun APC (halftrack)' (empty in all OOBs other than german) and then link class 125 to the moved units formation instead of 127.
The units that would be moved from 127 to 125 are
Polish LWP; 219 Taczanka
Australia/new zealand; 134 - Bren Carrier, 223 - Bren Carrier, 225 - Boyes Carrier
India; 223 - Bren Carrier
Belgium; 363 - Bren Carrier
Norway; 363 - Bren Carrier
Canada; 363 - Bren Carrier
Romania; has a 251/9 in the class, it can remain.
GB; 453 - Bren Carrier, 456 - PIAT Carrier
The formations to be linked to class 125 are
Polish LWP; formation 056 Taczanka Pl
Australia/new zealand; formations 035 Mortar Sec/M4, 081 Carrier Platoon, 086 Carrier Section, 097 2 Bren Carriers, 330 Mech Patrol
India; formations 033 Bren Carriers, 096 Carrier Platoon,330 Mech Patrol, 331 Motor Company
Belgium; formations 019 Mortar Sec/M, 330 Mech Patrol, 331 Motor Company+, 332 Motor Company+
Norway; formations 029 Mortar Sec/M, 070 BR FOO, 072 BR Carrier Sec
Canada; formations 014 Mortar Sec/M, 329 Mech FO Team, 330 Mech Patrol, 331 Motor Company
Romania; has a 251/9 in the class it can remain.
GB; formations 329 Mechanised FO, 330 Mech Patrol, 331 Motor Coy 30, 332 Motor Coy 43, 345 Motor MG Pl 43
AS someone who likes to play a game with just a grenadier battalion, giving the 6 251/9s in the ust coy their smoke rounds makes a big difference. You can save a lot of your thinly armoured APCs with the cover the smoke shells provide.
The 250/8 was apparently used to replace the 251/9 in the panzergrenadier battalions and so can also be added into class 127.
To give non-0 250/8s smoke, as they appear in the German recon formations, you could move 250/8s out of class 32 and 126 and into class 133 "Light SP mortar", (empty in the german OOB). This should I think give the non-0 250/8s their smoke.
Then in the formations where scout 250/8s are now missing add another 'Unit/Formation' of class 133 at the end of the formation and the 250/8s are still there and now they have smoke.
Formations in question are
077 PzAufklZug(gep)
110 Artillerie VB/M (not sure if these should get a 250/8 anyway)
121 SdKfz250 Gruppe (this can probably be left as is or the smoke firing 250/8s added as a seperate entry in Misc)
122 SdKfz250 Aufkl (this can probably be left as is)
217 StKp PzAufklAbt
219 PzAufklKp(gep)
221 PzAufklZug(GrW)
222 PzAufklGrp(Ust) (not sure what this formation represents)
228 PzAufklBt(sGrW) (not really neccesary to replace the 250/8 removed from scout class in this formation.)
From
http://www.wwiidaybyday.com/
see
1113 (gp) Panzer-Aufklärungskompanie (gepanzert)
shows 1 "support" 250/8 per gruppe of 7 251/1s
1113 (gp) (fG) whieleichte Panzer-Aufklärungskompanie (gp) (fG)
shows a 2 250/8 cannon coy for 3 gruppe of 6 251/1s, very similar to the 'PzGren Kp (gep)' (formation 357) in your game
formation 077 "PzAufklZug(gep)" making up formation 219 "PzAufklKp(gep)" may benefit from being brought into line with the TOEs above.
The above TOEs also show the 250/8 "PzAufklaerer"? (units 308 and 353) which you have modeled as a 4 man team armed with SMG and grenades as a six man team carrying an LMG.
Best Regards Chuck.