Heres an interesting quote from
http://www.militaryphotos.net/forums...ad.php?t=43178
The entire article is well worth a read.
"The Pz.IV Ausf.A/B/C/D and the StuG III Ausf.A in France in 1940 could fire a smoke shell with the 7.5cm L/24. The German tanks were not equipped with smoke dischargers prior to 1941. The use of smoke dischargers was more generalized in the following battles in Russia and North Africa. They were mounted on the rear portions of the mudguards, facing forwards, or on the sides of the turret. For instance, on a Pz38(t), they would mount a 1/2 cylindrical shaped cylinder propped up by a piece of steel that would contain 3 smoke projectiles per side.
Nevertheless, beside the smoke shells fired by the artillery or by the Pz.IV or StuG III, the Germans modified several tanks by mounting a kind of smoke dispenser on the rear of the tank. It was a rack with German infantry smoke candles ("Nebelkerzen"). These candles just "burned" and made smoke on the rear of the tank instead of real smoke dischargers making a smoke screen in front of the tank. It is not sure that there was a triggering system from inside the tank. This system was already used in Poland in 1939."
Points I found interesting,
38t had smoke candles doesnt have any in-game.
I think in my travels Ive seen pictures of pz 2 with the smoke candles mounted on the mudgards firing forward not quite sure about it though Ill check.
AS I read it smoke candles enter service in 41. prior to this date the vehicles in question used the 'Nebelkerzen'
I can't imagine that they didnt have a triggering system from inside, stopping the tank and jumping out to light them seems impracticle.
203 "PzKw III Tauch" is pz 3 auf e so may have had them if they could survive a dunking
Not sure about the 222 some had the Nebelkerzen some didnt, as one can find a picture of pretty much any vehicle that has smoke candles without them fitted, maybe the 222 should get candles also.
My apologies in the origional post the picture of the pz 3 with armoured Nebelkerzen is the 5th picture down not the 3rd.