Showing posts with label BT. Show all posts
Showing posts with label BT. Show all posts

Monday, 24 June 2024

Experience in the Far East

Soviet tanks and SPGs during the Battle of Lake Hasan and its impact on Soviet tank development

Battle is the main stimulus for development of tank armament and protection. No matter how much technology evolves during peace, only war will give a proper measure of its effectiveness. A conflict where tanks was used could be analyzed to show where to go from here. Even small conflicts like the Rif War yielded valuable experience for its combatants.

T-26 crews near Lake Hasan, summer 1938.

Soviet tanks first saw battle in the fall of 1929 during the East China Railroad Conflict. The experience gained there was minimal. Spain was a much better lesson, as Soviet T-26 and BT tanks were used fairly intensively. Experience in using the T-26 in late 1936 and early 1937 in Spain gave a lot of material for Soviet tank designers. Other local conflicts were also valuable. For instance, the events at Lake Hasan that erupted 85 years ago were the first time where the Red Army used its tanks and SPGs against a peer enemy.

Thursday, 25 January 2024

Flame War

A search for methods to combat tanks began as soon as the tanks themselves reached the battlefield. The first anti-tank rifles and anti-tank cannons were already created during the First World War. They turned out to be quite bulky and could not be used by an individual to combat armoured vehicles. The Germans were the first to design improvised anti-tank grenades that could be used by one person. Bottles of incendiary fluid came later. They also turned up during the First World War, but then they were used for a very different purpose. These bottles were first used against armoured vehicles in Ethiopia and then in Spain. They were quite an effective weapon against first Italian CV 33 tankettes and then Republican T-26 tanks. The Japanese also used bottles filled with gasoline during the battles at Lake Hasan and Khalkhi-Gol. "Bottle artillery" proved its effectiveness once again.

Trials of Molotov cocktails against an A-34 tank, April 1940. The trials were not entirely successful.

Monday, 7 August 2023

Shermans in "August Storm"

In Soviet historiography, the Soviet-Japanese War of 1945 is overshadowed by grandiose operations against Berlin and Vienna earlier that year. However, Western historians pay close attention to this campaign and debates on whether it was the A-bombs or the Soviet invasion that forced the Japanese to surrender rage on to this day. Famous historian David Glantz even invented a grandiose name for this operation: August Storm. The Red Army's advance was indeed lightning fast, in part thanks to foreign vehicles. This included the M4A2(76)W HVSS, the most advanced Sherman variant sent to the USSR.

Clouds gather

Stalin promised to enter the war against Japan within three months of Germany's defeat at the Yalta conference in February of 1945. Colonel-General Alfred Yodl signed an order for unconditional capitulation of all German forces on May 7th, 1945, coming into effect at 23:01 on May 8th. This kicked off the countdown for a Soviet offensive against Japan. The Red Army had three months to move an enormous force to the other side of an equally enormous country.

Concentration of the 6th Guards Tank Army in the vicinity of Tamsagbulag. The army included the 9th Guards Mechanized Corps that used Sherman tanks.


The 6th Guards Tank Army was one of the units that was destined to transfer to the far east. On June 26th, 1945, the unit was reallocated to the Transbaikal Front. It would have to cover a distance of 9000 km to cross from Czechoslovakia to Choibalsan. 88 trains of 60 cars each were allocated for this journey. The full transfer took 30 days, but the first elements began to form up by July 17th. New tanks awaited them there: 100 M4A2(76)W including the latest tanks with HVSS suspensions. These tanks were described in documents as "M4A2 with wide tracks". The 46th Guards Tank Brigade was fully equipped with these vehicles. One company from each of the tank regiments of the 18th, 30th, and 31st Guards Mechanized Brigades that made up the 9th Guards Mechanized Corps also received new tanks.

From Choibalsan, the tanks would make a 300 km march to Tamsagbulag, where the army would prepare for the upcoming offensive. This march took place in extreme conditions. The temperature reached 45 C during the day, as a result of which marches took place only at night to avoid overheating the engines and running gear. This also helped hide the tanks from air reconnaissance, as there was nowhere to conceal them in the desert. The army's documents describe the M4A2 as less sensitive to hot weather than the T-34-85. The American tanks could cover more ground every day, but at the cost of increased fuel consumption. The Shermans normally burned 40 kg of fuel per hour, but this went up to 60 kg in Mongolia. Each tank could only run 90-100 km before refuelling instead of 150 km. The T-34-85 burned only 26 kg of fuel per hour.

M4A2(76)W HVSS, the newest tanks of the 9th Guards Mechanized Corps.

Monday, 30 January 2023

Tanks in Snow 1941-42

Winter is a difficult time for any kind of vehicle, including tanks. Since the Russian winter is long, the USSR paid a lot of attention to how tanks put up with it. This applied in full to mobility in winter. Driving through deep snow banks was a mandatory part of testing every armoured vehicle starting with the MS-1. The MS-1 showed insufficient traction in snow, which is a part of the reason why the "Eagle's Claw" track was introduced. Winter tests of the Vickers Mk.E tank in the USSR were also a key factor in accepting the tank into production. 

T-34 tanks were often the only Soviet tanks that could move outside of roads in winter.

Wednesday, 26 October 2022

Tanks at Khalkhin-Gol

 "To the Chief of the RKKA ABTU
August 19th, 1939

Directorate of the People's Commissar, 1st Department
#755895ss

On orders of the Deputy People's Commissar of Defense, Army Commander 1st Class comrade Kulik, I send you a copy of the act on the inspection of combat and training in the 1st Army Group for your inspection and execution of necessary measures.

Deputy Chief of the 1st Department, 
Major Bibikov

Act [to certify that] I conducted an inspection of the combat and training in the 1st Army Group fighting in the region of Khalkhin-Gol during the period of July 11th-24th, 1939

1. Permanent units

[...]

Armoured units:

The 7th, 8th, and 9th Armoured Brigades are essentially armoured cavalry, more suitable for guarding borders and internal security. They did not train to fight alongside infantry and don't know how to do this. These units played a big role in the initial stages, but took heavy losses. The arrival of poorly trained reinforcements weakened them, they need to train and re-equip.

Friday, 2 September 2022

Tsyganov's Armour

Additional armour developed by Engineer-Major N.F. Tsyganov, author of the BT-IS and BT-SV

Plenty of tank designers were among those who were repressed in the 1930s. 1937-38 was the most difficult period where a number of designers and military personnel linked to tank production were either executed or ended up with lengthy prison sentences. However, history sometimes lumps the latter in with the former. For instance, A.O. Firsov (chief designer of the T2K design bureau at factory #183) died in 1943 of natural causes and was not executed as is sometimes written. There are even more surprising cases where the allegedly executed party remained working at their old place of employment. For instance, Nikolai Nikolayevich Kozyrev, the chief tank designer at factory #37 and author of the T-37 and T-37A amphibious reconnaissance tanks, would have been very surprised to find out that he was executed. Kozyrev didn't even leave factory #37. It's true that N.A. Astrov replaced him as the head of tank design, but Kozyrev remained in important positions. By the fall of 1941 he occupied the post of chief engineer of factory #37. After evacuation to Sverdlovsk he continued working on tanks.

Tsyganov's BT-IS tank. The drives to the wheels can be seen. The BT-IS was an 8x6 vehicle, i.e. 6 of the wheels were powered.

Monday, 14 March 2022

T-34's Heart on Trial

The engine is the most complicated and most important component of any tracked fighting vehicle. It might even take more time to develop the engine than the rest of the tank put together. Even today, not all tank building nations have the ability to produce their own engines, and a successful design can define the development of tanks for years to come. The V-2 diesel engine put into production in 1939 was one such design. This article will tell the story of the trials that paved its way to life.

Friday, 7 January 2022

Starshina Commanders

 "In 1941 order #0433 signed by then Deputy People's Commissar of Defense comrade Fedorenko ordered the assignment of Lieutenants and Junior Lieutenants as the commanders of medium and light gun tanks.

Based on this order, commanders of T-26 and BT tanks also have to be officers.

Considering the shortage of officers and less demanding training for commanders of T-26 and BT tanks compared to modern vehicles, I consider it possible and reasonable to appoint well prepared troops with the rank of Starshina who have a lot of experience in these tanks.

I ask for your decision.

Attached: order of the People's Commissar of Defense.

Deputy Commander of Armoured and Motorized Forces of the Red Army, Colonel-General of the Tank Forces, B. Korobkov

Member of the Military Council of the Armoured and Motorized Forces of the Red Army, Colonel-General of the Tank Forces, N. Biryukov"

CAMD RF F.38 Op.11355 D.1518 L.35
Printed in Glavnoye Bronetankovoye Upravleniye Lyudi, Sobytiya, Fakty v dokumentakh, 1944-1945 p.421

Friday, 20 August 2021

Winter Camo



 "GABTU Scientific Research Proving Grounds

Approved:
Proving Grounds Chief Colonel Romanov, December 15th, 1941

Approved
Proving Grounds Commissar, Regimental Commissar Dolgov, December 16th, 1941

Conclusions regarding experimental winter camouflage of armoured vehicles

Introduction

On orders from the GABTU, T-34, T-50, BT, T-26, and T-40 tanks were painted in winter camouflage patterns between September 19th and October 2nd, 1941. The trials were performed at the GABTU proving grounds.

The goal of the trials was to:

  1. Establish the pattern that was the most effective at breaking up the outline and shape of the tanks.
  2. Establish the shade of colours that blend together with the surroundings in winter.
  3. Develop a formula for paint that is sufficiently resilient and easy to produce.
After the pattern, colour, and formula are selected, the proving grounds will apply it to samples of all vehicles used by the Red Army. After experimental camouflage is applied, an instruction manual on winter painting will be composed and requirements will be distributed to factories.

Monday, 2 August 2021

Chief Designer of the 1930s

When one lists Soviet tank designers, M.I. Koshkin is usually remembered first as one of the main authors of the T-34. He is usually followed by A.A. Morozov, who succeeded Koshkin as the Chief Designer of factory #183 in Kharkov and in Nizhniy Tagil after the evacuation. Zh.Ya. Kotin, the author of many tanks from the KV-1 to the IS-2, also ranks highly. N.A. Astrov, the creator of the T-40, T-60, T-70, and other light vehicles is slightly less famous. However, if one explores an earlier period of Soviet tank building, one will see many other much less known names. Their obscurity is largely due to their complicated history.

One such history belongs to the main character of today's article, Semyon Aleksandrovich Ginzburg. He oversaw the creation of the most numerous and most successful Soviet tanks of the interbellum era: the T-26, BT, T-28, and T-35. As the Chief Engineer at factory #185 he directed the creation of a number of tanks and SPGs. His designs include the T-50 light tank and SU-12 (SU-76) SPG, which played a fatal role in his career. Let us recall this man, whose contribution to Soviet tank building was truly immense. The war for his tanks began back in 1936 and finished in August of 1945 in the Far East.

Monday, 7 June 2021

Armoured Confusion: Start of the Great Patriotic War

One of the most popular topics of discussion in Soviet tank circles is their use in the Great Patriotic War. As strange as this may sound, the production and use of Soviet tanks during the war is not a very well studied topic. This is caused by shallow surface level research and resilience of "common knowledge", little of which overlaps with any facts. There are so many of these myths that it's impossible to cover them all in a single article. Let's examine only the first half of the Great Patriotic War and misconceptions linked to this period.

Wednesday, 2 June 2021

War Plans

The Red Army was undergoing a pretty radical reorganization in the summer of 1941. Fans of the theory that the USSR was about to attack Germany and Hitler merely delivered a preemptive strike will be disappointed to find out that not only did the Red Army not consider itself in any situation to fight a war in 1941, 1942 wasn't looking much better either. Compare the number of tanks on hand to the number of tanks required according to authorized strength.


Tank type

Authorized strength

On hand as of Jan 1st, 1941

% Authorized strength as of Jan 1st, 1941

Expected inventory as of Jan 1st, 1942

% Authorized strength as of Jan 1st, 1942

Peacetime

Wartime

Peacetime

Wartime

Peacetime

Wartime

KV

2100

2100

243

11.5

11.5

1093

52

52

T-34

4200

4200

350

8.3

8.3

2850

67.8

67.8

BT

5487

8273

7752

141.5

93.7

7752

141.5

93.7

T-26

13,802

15,872

9987

72.3

62.9

9987

72.3

62.9

T-50

 

 

 

 

 

500

 

 

T-37/

T-38

2420

3681

3596

152

100

3596

182

116.7

T-40

 

 

100

 

 

800

 

 

Armoured cars

5298

6853

4461

84.2

65

6271

118

91.7

Total as of January 1st, 1941: 22,530 tanks (of those 59 T-35 and 443 T-28), 4461 armoured cars


Via Yuri Pasholok

Friday, 5 February 2021

Export to Czechoslovakia

 "Chief of the General Staff
Worker and Peasant Red Army
July 5th, 1936
#20032/ss

To the People's Commissar of Defense, comrade K. Ye. Voroshilov

While in Czechoslovakia I met with the Chief of the General Staff of the Czechoslovakian army General Krejčí on his request. The meeting was confidential and took place in a seldom visited suburban hotel near Prague. 

General Krejčí was accompanied by his deputy General Fiala and a Colonel, Chief of External Relations and military attache in France.

I was accompanied by our military attache in Czechoslovakia, Colonel L.A. Schnitman.

General Krejčí underscored the respect that the Czechoslovakian government and army have for the Soviet government and Red Army and stated that he found it necessary to inform me and discuss a number of important issues to do with Czechoslovakia and the mutual assistance pact.

Tuesday, 25 August 2020

New Tanks

"Decree of the Committee of Defense of the Council of People's Commissars #198ss
On the RKKA Tank Armament System

August 7th, 1938
Top Secret

Taking into account the experience of combat and study as well as the requirements for tanks on the modern battlefield, the Committee of Defense decrees that the following tank system will be adopted.
  1. Tanks
    1. Breakthrough tank (anti-tank gun destroyer): tracked type produced according to ABTU requirements developed at the tank meeting and approved by the People's Commissar of Defense (attachment #1).
      1. The People's Commissar of Machinebuilding (NKMash) must deliver an experimental breakthrough tank by May 1st, 1939. Produce a wooden model and show it to the commission on September 1st, 1938.
      2. The People's Commissar of Defense Industry (NKOP) must produce and deliver to the People's Commissar of Defense an experimental breakthrough tank for trials by July 1st, 1939. A model of this tank must be approved by the model commission by November 1st, 1938.
      3. The NKO must test all experimental breakthrough tank prototypes and select the one most closely matching requirements for a breakthrough tank to accept into service in the RKKA.
      4. As soon as the tank is put into production, remove the T-28 and T-35 from production.

Monday, 22 June 2020

Video: BT-5 and BT-7

In this week's video I go over how the BT-5 and BT-7 designs evolved from the BT-2 and the identifying features of the last generation of fast Soviet tanks.


Tuesday, 9 June 2020

Soviet Tank Observation

From "Observation from Modern Tanks"
Engineer-Major L.S. Tolokonnikov
Vestnik Tankovoy Promyshlennosti (Tank Industry Herald) 1944 #10

"Presently, tanks use simple observation devices
  1. Observation slits with protective glass and without.
  2. Mirror observation devices (periscopes).
  3. Commander's cupolas with observation slits or periscopes.
  4. Observation ports.
Optical (aside from sights) and mechanical observation devices are completely absent. until a new type of tank observation device is discovered, further improvement of observation from tanks, protection of the observer, and convenience of observation can only be increased by improving the design of existing devices, increasing their quality, positioning them more rationally, and improving their attachment inside the tank.

This article will examine only a portion of the issue, that is the position, amount, and observation angle of modern tanks, domestic, captured, and allied (25 in all).

Monday, 10 February 2020

Sights Trials

"April 4th, 1941


Report on the trials of a PT-4 periscopic tank sight

Trials were conducted according to directive #145211/s of the Main Automotive and Armoured Vehicle Directorate of the Red Army issued on March 22nd, 1941, by commission #6833 composed of:
  • Chairman: deputy commander of military unit 6837 Major T.G. Kuznetsov
  • Members:
    • Deputy chief of artillery supply of unit 6833 Sr. Lieutenant Burkov
    • Chief of ammunition supply of unit 6837 Lieutenant Kochegarov
  • Also present:
    • GABTU military engineer 3rd class G.M. Margulis
    • GAU assistant military representative Major L.D. Podgoretskiy
    • Lenin factory #69 senior engineer D.P. Gimein
    • Experimental proving grounds senior engineer, military engineer 3rd class B.A. Ivanov

Monday, 9 September 2019

Experimental Work at Factory #183, February 1941

"Report on experimental work at factory #183 for February of 1941

Work performed at workshop 500:
  1. Trials of two types of main clutches with a friction clutch for the fan. Tanks with these clutches drove for 400 km, after which trials stopped due to breakages of three pins on each. Presently, a new main clutch is being produced with an altered driving drum and a friction clutch for the fan. This type will be produced in mid-March of 1941.

Wednesday, 7 August 2019

Fuel Capacity

"Table of one full load of fuel per fighting vehicle."

Vehicle
Capacity in kg
Type of fuel
Notes
T-35
637
BK-70, B-70
Aux. tank 360 L
KV-1 and KV-2
834
RB-70 diesel

T-28
462
BK-70, B-70

BT-7M
619
RB-70 diesel

BT-7
547
BK-70, B-70, RB-70

BT-5
263
ditto

T-34
710/628
BK-70 diesel/B-70

T-26
204
RB-70

T-40
154
RB-70

T-50
255
RB-70

T-60
227
RB-70

T-70
321
RB-70

T-38
90
Automotive gasoline

T-37
90
Automotive gasoline

T-27
35
Automotive gasoline

BA-20 light
75
Automotive gasoline

BA-10 medium
88
Automotive gasoline

BA-11 heavy
115
Automotive gasoline

BA-64
68
Automotive gasoline

MK-3 Valentine
145
Gasoil “3”

MK-2
192
Gasoil “3”

American M3 medium
613
3 cubic cm of RD per 1 kg of B-70

American M3 light
146
2 cubic cm of RD per 1 kg of B-70 or B-74

Universal Carrier
45
B-74 2nd grade

Bren Carrier
68
B-74 2nd grade


Via Valeriy Lisyutin