*Soviet artillery prime movers of WWII - some info

[VDV]

For photos of other Soviet tractors in Wehrmacht service, look here at the bottom of the page:

http://beute.narod.ru/Beutepanzer/su/su.htm

Also some sources report that Soviets used "Voroshilovets" as chassis for 85mm AA SP gun in 1941. But I couldn't find any additional info about such vehicle.

I don't think there was ever such a modification. What I think is interesting about the Komintern is the relatively small numbers of wartime losses. From 9.42 - 5.45 only 56(!) tractors were lost.

Also found out that ~ 60 KhTZ-16 armored tractors were built in 1941. A few made it into 1942. The tractor in the photo presented by Juha was taken in Kharkov in autumn 1941.

[BIGpanzer]

Hello, VDV!

Thanks for the info! What is your source about the amount of produced armored tractors? That is interesting, I knew only about several armored tractors of “NI” type, were built in Odessa in autumn 1941 on STZ-5 chassis mainly.

VDV wrote:
What I think is interesting about the Komintern is the relatively small numbers of wartime losses. From 9.42 - 5.45 only 56(!) tractors were lost.

As for the small losses of “Comintern” during the WWII (incomparable with thousandths losses of “Komsomolets” and STZ-5 artillery tractors)…. It is really quite interesting fact! I think that the reason was the following: “Cominterns” were used mainly for tow the large-caliber cannons and howitzers, not the regimental, divisional or AT guns; so they appeared at the front line much more rarely than the light artillery tractors. The second reason is that many “Cominterns” served in the Far East military district before and during WWII, so they didn’t participate in combat until 1945.

Yesterday I combined the info about the Soviet heavy artillery tractor “Voroshilovets”, I could find. May be it will be interesting for the forum members.

Heavy tractor “Voroshilovets” (named in honor of the Soviet hero of Civil War and the Minister of Defense of 1930s marshal K.E. Voroshilov) was produced at Kharkov (Ukraine) Locomotive Factory in 1939-1941 (1123 were produced). 800 were produced till June 1941, but army received only 228 from them. On 1 September 1942 there were 528 “Voroshilovets” in the Soviet Army, in May 1945 – only 336. Heavy artillery transport tractor “Voroshilovets” was used for tow heavy and super-heavy 152mm-305mm guns (152mm- and 210mm cannons, 203mm- and 305mm howitzers, 280mm mortars) and for breakdown evacuation of middle and heavy tanks with the help of powerful winch.

“Voroshilovets” had an enlarged cabin from ZiS-5 truck, two petrol tanks (550 l) and large load platform with four removable benches for gun’s crew and hinged out sides.

Specifications: weight 15,5 t + 3 t load + 18-22 t trailer; crew – 3 + 16; dimensions 6,218 x 2,350 x 2,736 m (without awning); base - 3,5 m; track – 1,86 m; clearance – 41 cm; unit pressure – 0,578 kg/sq.cm; engine – tank 12-cyl. diesel V-2V 375-400 hp, speed – 36-42 km/h; range – 270 km; surmounted slope – 41 degree.

“Voroshilovets” had an excellent power (the most powerful artillery tractor of WWII) and carrying capacity, and very good cross-country ability, but the road grip of tracks was not sufficient for tow super-heavy trailers in winter. Also its technical service was laborious.

“Voroshilovets” was produced also with 300 hp V-4 diesel and 400 hp gasoline engine M-17T because of shortage of powerful tank diesels V-2V during WWII.

VDV wrote:
I don't think there was ever such a modification.

Some sources really report that several heavy artillery tractors of “Voroshilovets” type were equipped with 85mm AA gun at Podolsk (Moscow region) factory No.8 in 1941. So probably, such vehicles existed. Where and how they were used, I couldn’t find.

VDV wrote:
For photos of other Soviet tractors in Wehrmacht service, look here at the bottom of the page: http://beute.narod.ru/Beutepanzer/su/su.htm

Wehrmacht used trophy “Voroshilovets” under the name STALIN-607(r). Unfortunetely, I didn’t know the exact amount of those tractors, used by German Army. Also I couldn’t find any photos of German “Voroshilovets”. Even the photos of “Comintern” (which used by Wehrmacht very rare) in German service are possible to find, but no “Voroshilovets” .

Photos of the heavy artillery tractor "Voroshilovets":
http://bronetehnika.narod.ru/voroshilov ... ovec_4.jpg (towing the 203mm howitzer, Berlin, 1945)
http://bronetehnika.narod.ru/voroshilov ... ovec_8.jpg (during the trials)
http://bronetehnika.narod.ru/voroshilov ... ovec_6.jpg
http://rkkaww2.armchairgeneral.com/gall ... wing_1.JPG (towing the 210mm gun)

Colour pictures of the "Voroshilovets":
http://bronetehnika.narod.ru/voroshilov ... ovec_7.gif
http://rkkaww2.armchairgeneral.com/gall ... ets_1b.JPG

Blueprints of the "Voroshilovets":
http://bronetehnika.narod.ru/voroshilov ... vec_11.gif

Photo of the Soviet heavy artillery prime mover "Voroshilovets" (1939-1941, 1123 copies)
is from http://armoredzone.by.ru/Pred/voroshilovec3.jpg

Regards, BIGpanzer

[VDV]

Thanks for the info! What is your source about the amount of produced armored tractors?

Frontline Illustration 4/2002 -- "Samohodnaya Artilleria Krasnoi Armii".

As for the small losses of “Comintern” during the WWII (incomparable with thousandths losses of “Komsomolets” and STZ-5 artillery tractors)…. It is really quite interesting fact! I think that the reason was the following: “Cominterns” were used mainly for tow the large-caliber cannons and howitzers, not the regimental, divisional or AT guns; so they appeared at the front line much more rarely than the light artillery tractors. The second reason is that many “Cominterns” served in the Far East military district before and during WWII, so they didn’t participate in combat until 1945.

Another reason might be ease of repair due to the simplicity of the Komintern's design.

breakdown evacuation of middle and heavy tanks with the help of powerful winch.

Correct, i've seen photos of one towing a 55 ton T-35.

Some sources really report that several heavy artillery tractors of “Voroshilovets” type were equipped with 85mm AA gun at Podolsk (Moscow region) factory No.8 in 1941. So probably, such vehicles existed. Where and how they were used, I couldn’t find.

I still haven't been able to verify this in my sources. Where did you read of it?

[BIGpanzer]

Hi, VDV!
Thanks again
As for "Samohodnaya Artilleria Krasnoi Armii"book, probably, I couldn't find it easily, because it is on Russian, as I understand.

VDV wrote: Another reason might be ease of repair due to the simplicity of the Komintern's design.

Yes, this reason is also possible. Nevertheless some sources report that its technical service was quite laborious (gear-box, some parts of transmission and suspension of T-24 middle tank type - especially unreliable driving-roller). I still thinking that "Cominterns" were used not so often at the front line positions as other artillery tractors.

VDV wrote: Correct, i've seen photos of one towing a 55 ton T-35.

That's very interesting, could you, please post that photo or give the link to it. Thanks in advance! I can suppose that for evacuation of one 50-55 t heavy T-35 two or more "Voroshilovets" were used. One "Voroshilovets", probably, was not enough.

As for 85mm AA gun, based on "Voroshilovets" chassis - I found the info only in Russian sites, so it took several hours to translate. Please, see for example http://armoredzone.by.ru/Pred/voroshilovec.shtml
Here is the Russian abstract: Осенью 1941 года на заводе № 8 (в Подольске) была выпущена небольшая партия самоходных установок с 85-мм зенитной пушкой на шасси "Ворошиловца".
I remember I saw the picture (not photo) of "Voroshilovets" with heavy AA gun on the platform, but I don't remember where I saw that picture. Tried to find it yesterday, but unsuccessfully

BIGpanzer

[VDV]

Hi BIGpanzer:

As for "Samohodnaya Artilleria Krasnoi Armii"book, probably, I couldn't find it easily, because it is on Russian, as I understand.

I was under the impression that you read Russian

Yes, this reason is also possible. Nevertheless some sources report that its technical service was quite laborious (gear-box, some parts of transmission and suspension of T-24 middle tank type - especially unreliable driving-roller). I still thinking that "Cominterns" were used not so often at the front line positions as other artillery tractors.

Nevertheless, you must admit that the losses proportion for this tractor are quite interesting.

That's very interesting, could you, please post that photo or give the link to it. Thanks in advance! I can suppose that for evacuation of one 50-55 t heavy T-35 two or more "Voroshilovets" were used. One "Voroshilovets", probably, was not enough.

See attached photo..

As for 85mm AA gun, based on "Voroshilovets" chassis

Sorry, I mistook the Voroshilovets for the Komintern. Yes, I found the same information regarding a small number of vehicles being equipped with the 85mm 52K gun.

[BIGpanzer]

Hi, VDV!

VDV wrote: I was under the impression that you read Russian

Really? Thanks! I think that person who is interested in WWII history should know English, German, French and Italian and also should translate Russian and Japanese texts even if with vocabulary. So I am trying to achieve that

Thank you very much for the photo of "Voroshilovets", towing the T-35!!! Quite rare photo, as me seems. Never saw it before .
By the way, do you have the illustration of "Voroshilovets" with 85mm AA gun? It will be also very interesting, especially taking into consideration our discussion about it.

Regards, BIGpanzer.

[BIGpanzer]

I also found the info about Soviet transport tractor “Stalinets-2” (S-2). It was heavier and more powerful than STZ-5 transport tractor, but also based on modified civil tractor base (heavy S-60 in the case of “Stalinets-2”). At first the “Stalinets-1” (S-1 or “High-speed”) was developed in 1935, using S-60 chassis, but with completely modified 120 hp petrol engine, transmission, suspension and caterpillar tracks. Platform for ammunition with benches and awning, also winch were added.

In 1937 the new tractor (S-2) was developed as S-1 with economy in use and reliable, but heavy 4-cyl. diesel MT-17 (the same was used on S-65 civil tractor) and modified suspension (tank T-26 type) and transmission. “Stalinets-2” was not very powerful and reliable, its speed and carrying capacity were not enough for heavy artillery units also, and weight was quite high. S-2 needed an engineering follow up, but it was recommended to serial production because of shortage of heavy transport tractors in artillery units. Nevertheless some modifications and improvements were made during the serial production (tractors of the third series had better transmission and suspension, new 10 t winch and enlarged cabin from ZiS-5 truck). Also more powerful diesel S-3 was developed (160-185 hp).

S-2s were used mainly at the South-Western Front in tank and artillery units for tow the 85mm AA guns, 122mm-203mm heavy cannons and howitzers, 280mm super-heavy mortars. Also they evacuated damaged light and medium tanks till the end of WWII.

1275 S-2 were produced in 1939-1941 by Chelyabinsk Tractor Factory. On 1 September 1942 Red Army had 892 “Stalinets-2”

Specifications of S-2: weight 12 t + 1,5 t load + 10-19 t trailer; crew 2 + 8; dimensions 4,674 x 2,440 x 2,756 m; base 2,025 m; track 1,823 m; clearance 46,2 cm; diesel engine 105-115 hp + winter-starting petrol engine 20 hp; speed 22-25,5 km/h; range 160 km.

As for the photos and pictures of “Stalinets-2” – it was very hard to find them in literature or Internet. I could find only two photos, please, enjoy!

Colour pictures of "Stalinets-2":
http://rkkaww2.armchairgeneral.com/gall ... y/S-2b.JPG
http://bronetehnika.narod.ru/tyagachi_d ... nec2_1.gif
Photo of the "Stalinets-2":
http://www.autogallery.org.ru/k/sa/stal ... ydeww2.jpg (captured by the Germans)
Drawing (blueprint) of the "Stalinets-2":
http://www.weltkrieg.ru/images/original/9/815.jpg

Photo of the Soviet medium transport artillery tractor S-2 (1939-1941, 1275 copies)
is from http://www.weltkrieg.ru/images/original/9/813.jpg

[VDV]

By the way, do you have the illustration of "Voroshilovets" with 85mm AA gun? It will be also very interesting, especially taking into consideration our discussion about it.

No unfortunately I haven't seen neither a photo nor pic of this. Even the authors of my book "Samohodnaya Artilleria.." weren't aware of this modification so it must be very rare to find info on it.

[BIGpanzer]

Hello, VDV!
I am trying now to combine the info about Ya-12 and Ya-13 Soviet artillery tractors, which were produced since 1943. And have the problem with the photos of them! Could you help me with this?

Regards, BIGpanzer

[VDV]

Hi BIGpanzer,

I have no info on these tractors. What types of tractors are they?

[BIGpanzer]

Hmm.... What type? As me seems they were high-speed transport tractors, based on light tanks T-60 and T-70M transmission and suspension elements. Their weight was 5,7-6,5 t. In May 1945 Red Army had 1270 of Ya-12 and Ya-13 tractors, also they were produced after WWII as M-12A and M-13A with some modifications. So seems that was quite widespread model of artillery tractor. Unfortunately, I also didn't know about it some days before. That is why I posted a question here.

Here is a picture of Ya-12, but I couldn't find any photo of this tractor!
Picture of the artillery tractor Ya-12:
http://rkkaww2.armchairgeneral.com/gall ... -12_1b.JPG

BIGpanzer.

[BIGpanzer]

Here is some info about Ya-12 artillery tractor.

Artillery prime mover Ya-12 (Yaroslavl-12) was developed in 1942-1943 when the production of all artillery tractors in USSR was stopped because of tank production. So the requirement in reliable and high-speed modern artillery tractor was extremely high at that time. Soviet engineers from NATI (Research Car-Tractor Institute) decided to use transmission and suspension from serial produced light tanks T-60 and T-70M, as well as car engines GAZ or ZiS.

In 1942 the experimental high-speed tractor “D” (twin-engine with two parallel GAZ-MM engines, 86 hp total) for 8t trailers was built, based on T-60 light tank transmission and suspension. It was recommended to start the serial production of modified “D” under the name Ya-11 at Yaroslavl Car Factory (YaAZ). In March-June 1943 first 55 Ya-11 were produced (weight 5,418 t + 2 t load + 5-8 t trailer, speed 26,5 km/h). But German aviation destroyed the engine workshops of Gorky Car Factory (GAZ) in June 1943 and the production of GAZ-MM engines was stopped.

The difficulty was overcame with the help of lend-lease USA 4-cyl. diesels GMC 4-71 with gear-boxes Spicer-5553. Engineers from YaAZ modified American diesels and installed them on Ya-11 instead of GAZ-MM engines. The production of new Ya-12 (Ya-11 with GMC-4-71 and T-70M light tank transmission) immediately started. It should be noted that Russians produced the modified copies of GMC 4-71 diesel under the name YaAZ-204 (145 hp) more than forty years till the end of 1980s (!) and used them on light tractors, carriers and trucks.
In 1943 285 of Ya-12 were produced. Ya-12 were used at first at Baltic Front, later at all fronts for tow the 85mm AT and AA guns, heavy 100mm-152mm cannons and howitzers and even 203mm heavy howitzers.

Light high-speed Ya-12s were much more modern than artillery tractors of 1930s and had good reliability, speed and power. Their cabins and platforms with folding benches, door from the rear and awning were also more comfortable for the crews. As for disadvantages – YA-12s had narrow tank tracks, small clearance and had no winch. Also American diesels were complicated in front-line service and hardly started at –20 –40 degree during winters.

Because of some interruption of delivery of GMC diesels from USA in 1944 several modifications of Ya-12 with Soviet petrol engines were also produced. Among them were Ya-13 (95 were produced) with 76hp ZiS-5M and Ya-13F (several hundreds were produced) with 95hp special engine ZiS-MF. The speed of such tractors was 14 km/h less than of Ya-12 with GMC diesels, also their range was 110 km less.
In 1945 the production of Ya artillery tractors was transformed from Yaroslavl Car Factory to the Factory No. 40 in Mytishi (Moscow region), they were produced since 1946 under the names M-12A and M-13A, later as M-2 with Su-76M SP gun suspension (in 1948-1954).

1666 artillery tractors of Ya type were produced during the WWII, in May 1945 there were 1270 such tractors in Red Army. They were used in artillery units till the end of 1950s.

Specifications of Ya-12: weight 6,55 t + 2 t load + 5-8 t trailer; crew 3 + 8 men; dimensions 5,030 x 2,440 x 2,29 m; track 2,1 m; clearance 31 cm; engine GMC-4-71 (110-112 hp); speed 38 km/h; range 290 km; comb grade – till 52 degree (!).

As for the photos of Ya-12 artillery prime movers – I could find several modern photos of preserved Ya-12, staying on pedestal at Yaroslavl Engine Factory in Russia as memorial. The absence of army photos of Ya-12 (only one I found, see below) seems strange, taking into consideration its wide use during WWII and later. Please, help me with the WWII photos of this tractor.

The photos of preserved Ya-12 (Yaroslavl Engine Factory):
http://www.russianarms.ru/armored/trans ... avl_01.jpg
http://www.russianarms.ru/armored/trans ... avl_03.jpg

Line drawing of Ya-12:
http://www.russianarms.ru/armored/trans ... ema_01.gif

The photo of the Soviet light artillery prime mover Ya-12 (1943-1946, 1666 copies)
is from http://www.autogallery.org.ru/k/y/ya12.jpg

BIGpanzer

[BIGpanzer]

........By 1940 Soviet engineers came to the conclusion that artillery prime movers should based on powerful and maneuverable middle tank T-34 chassis, which should make the serial production of those prime movers more easily also. In 1941 several copies of experimental artillery heavy prime mover AT-42 (abbreviation means artillery tractor) with tank diesel V-2 (500 hp), suspension and transmission from T-34 were produced by Kharkov Locomotive Factory. AT-42 had 17 t weight + 3t load + 15 t trailer and speed 33 km/h. The beginning of the war stopped the trials of AT-42.

In 1944 the new heavy prime mover AT-45, using the chassis of T-34 and "Voroshilovets" design, was developed at factory No.183 (city - Nizhny Tagil). AT-45 with 350 hp diesel and powerful winch had 19 t weight + 6 t load + 22 t trailer, speed was 35 km/h, range – 720 km. Six experimental AT-45 were built by factory No. 75 (previous Kharkov Locomotive Factory) in 1944, two of them were tested at the front. But as the plant started to manufacture the new T-44 middle tank, the work on this prime mover ceased.

Also light high-speed armored prime mover ATP-1 for AT guns, armed with MG and based on light tank T-70M chassis, was developed in 1944............

Any additional info about those prime movers is very welcome!

Photo of the AT-42 experimental heavy prime mover (1941):
http://www.morozov.com.ua/images/p49_1l.jpg

Photo of the AT-45 heavy artillery tractor during trials:
http://www.morozov.com.ua/images/p49_2l.jpg
Picture of the AT-45:
http://www.tracks-n-troops.com/TP/7297.jpg

Regards, BIGpanzer

[BIGpanzer]

I found a topic about Soviet half-tracks with interesting photos, posted here:
http://forum.axishistory.com/viewtopic. ... ight=zis42

Because those half-tracks also used as artillery tractors for toe the divisional and AA guns in Red Army, I would like to add the info about them. Please, enjoy

Different models of half-track prime movers for snow and mud overcoming were developed in USSR in 1930s.

In 1910-1916 the French engineer A. Kegress (manager of Russian Imperial garage) developed many cars with rear rubber caterpillars instead rear wheels and skis on the front wheels. They were widely used as trucks and armored cars chassis during WWI, Russian Civil War and even in early 1930s. Later, in 1930s such rear rubber caterpillars with friction linkage with driving-wheels were experimentally tested on different serial produced cars and trucks – Ford-T and GAZ-A (22 hp; 860 kg; 22 km/h; unit pressure 0,09 kg/sq.cm), GAZ-A (unit pressure 0,18 kg/sq.cm), GAZ-4, GAZ-M1 (50 hp, 48 km/h, weight 2,46 t + 0,5 t load, depletion of fuel 41 l/100 km, unit pressure 0,3 kg/sq.cm), GAZ-AA (2,8 t; 40 hp; 25 km/h; unit pressure 0,127 kg/sq.cm; depletion of fuel 55-60 l/100 km), ZIS-5 and heavy YaG-4.
The disadvantages of all those constructions were the short life of rubber caterpillars (near 100 km) and their slide from the wheels because of friction linkage, not gearing.

Also Soviet Army used French half-track artillery tractors «Somua» in 1930s.

Several half-tracks with passenger body (NATI-2 and NATI-3), based on GAZ-AA truck chassis, were successfully tested in 1933-1936 in tundra and desert. Gorky Car Factory serially produced the modernized half-track NATI-VZ as GAZ-60 in 1938-1942 (near 200 were produced in 1938, 700 - in 1939, total - more than 1000). GAZ-60 had rubber caterpillar with metal grousers, carrying capacity 1,2 t and weight 3,375 t; 50 hp engine GAZ-M, speed 35 km/h and depletion of fuel 57 l/100 km.
GAZ-60s were used during Winter War 1939-1940 as artillery tractors and SP anti-aircraft MGs (4 x 7,62mm AA Maxim, mounted on the platform). Also the prototype with gas producer engine existed. Because of friction linkage of the caterpillars, they were used not successfully and drivers from artillery and tank units didn’t like them very much. Later the modernized GAZ-60P was developed, with gearing.
Small amount of half-track armored cars BA-30 (GAZ-60 chassis, weight 4,6t; crew 3 men; 1 MG, 50 hp, 37 km/h, range 253 km) were built in 1937 and used as armored tractors during the Winter War. In 1941 the experimental ZiS-31 with 57mm AT gun, mounted on GAZ-60, appeared, but the army gave preference to ZiS-30, used “Komsomolets” as chassis (see above).

Since 1938 the half-track prime mover ZIS-22 (based on serial ZIS-5 truck chassis) was developed by engineer G.Sonkin and later also serially produced in 1938-1942 in Moscow and Leningrad (experimental series, near 200 were produced). ZIS-22 showed excellent cross-country ability during the trials in 1939, but friction linkage of caterpillars again leaded to their slide from the wheels during the overcoming of 0,5 m snow. So the gearing was introduced on modified ZIS-22M, and later on ZIS-42.
ZIS-22 had carrying capacity 2,25 t and weight 4,66 t; 73 hp engine ZIS-5, speed 35 km/h, unit pressure 0,27 kg/sq.cm and imaginary depletion of fuel 60-100 l/100 km (!). It was also used during the Winter War in 1939-1940, but the strength of caterpillar mover was not high.
ZIS-22s were used also as AA SP MGs (4x7,62mm Maxim or 1x12,7mm DShK), mobile workshop. Germans used trophy ZIS-22 also, even mounted FLAK on them.
In 1939 the armored half-track troop-carrier B-3 was produced as experimental series (ZIS-22 chassis, crew 2 + 12 men, weight 7,1 t; ZIS-16 engine 85 hp; 40 km/h; range 150 km, armor 15 mm, 1 x 12,7mm MG DShK). 300 B-3s were produced.

It should be noted also that changeable metal caterpillars with special rollers (gearing) for fast reequipment of serial wheel trucks GAZ-MM and ZIS-5 (renamed as GAZ-65 and ZIS-33 + ZIS-35, correspondingly, when reequipped with those caterpillar set) existed. ZIS-33 was tested in 1940 during the Winter War with Finland. That caterpillar set was quite heavy (1322 kg), but could increase the cross-country ability of standard army trucks. But because of high depletion of fuel (three times more than truck without caterpillars) almost all ZIS-33s were reequipped back to normal wheel tracks after Winter War and was given to collective farms.


Regards, BIGpanzer

The photos of GAZ-60 half-track:
http://www.autogallery.org.ru/k/g/gaz60BVV.jpg (with skis on front wheels)
http://www.autogallery.org.ru/k/g/gaz60nn.jpg
http://www.autogallery.org.ru/k/g/36natiV3.jpg
http://www.denisovets.narod.ru/gaz/gazp ... GAZ60P.jpg
http://www.denisovets.narod.ru/gaz/gazp ... GAZ60_.jpg (preserved)

The photo of the ZiS-22 half-track:
http://www.autogallery.org.ru/k/z/zis22.jpg

The photos of the ZiS-33 half-track (ZiS-5 truck with special caterpillar set):
http://www.autogallery.org.ru/k/z/zis33.jpg
http://www.autogallery.org.ru/k/z/zis35sh.jpg


To be continued............

[BIGpanzer]

Guys!
Please, enjoy my materials! But may I also ask you? I need some more info about use of GAZ-60, ZIS-22 and ZIS-33 half-tracks during Soviet-Finnish War 1939-1940 by artillery and tank units. Also photos are very welcome. I saw several months ago in one journal some photos of those half-tracks (probably, GAZ-60 or ZIS-22), towning the 122mm howitzers near Mannerheim line, as well as destroyed by the Finns GAZ-60 with 4 x 7,62mm AA MGs.

Also I still need the WWII-period photos of Ya-12 artillery tractor (see above).

Thanks in advance, BIGpanzer

Photo of ZiS-33 half-track with loud-speaker (Finnish Front, 1940):
http://www.corazzati.it/zis33_fotobn.jpg