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DLM - Division Légère Mécanique
Light Mechanised Division

DLM - Division Légère Mécanique

The Light Mechanized Division (DLM - Division Légère Mécanique) was a mechanised formation, containing 300 armoured vehicles of which 190 were tanks, comparable to the German Panzer Division in strength. The word light in its name referred to its ability to quickly deploy into combat order and not to its equipment.

Since the beginning of the decade the 4th Cavalry Division (DC) had been an experimental unit for motorization of the cavalry and in 1935 it became the he 1st DLM. The following year saw the 5th DC converted into the 2nd DLM and the 3rd DLM was created in February 1940. A 4th DLM was planned to be formed in July but is regiments were included in what was to become the 4th DCR.

In June the four DLCs were converted into DLMs (4th through 7th) at the same time as the original three DLMs were reformed after having fought in the north. These seven formations were at a much reduced strength.

This OOB reflects the organisation of the DLMs on 10th May 1940.

The DLM contained the following combat units:

BLM - Brigade Légère Mécanique

The DLM was split into two Light Mechanized Brigades (BLM - Brigade Légère Mécanique). The two tank regiments were brigaded together as were the motorised dragoons, the deep reconnaissance regiment and the division’s anti-tank squadron. Both these types of brigade were called Light Mechanized Brigades (BLM). There were thus three different types of BLM all with different compositions; two in the DLM and one in the DLC.

RCC - Régiment de Chars de Combat

The DLM contained 2 combat tank regiments (RCC - Régiment de Chars de Combat) . These had two battalions each with two squadrons. One battalion was equipped with Somua S35 medium tanks and the other with Hotchkiss light tanks. The 1st and 2nd DLM used H35 and the 3rd DLM used H39 light tanks.

Each squadron had:

  • 1 command tank
  • 4 platoons each with 5 tanks

The regimental commander had a Somua S35 command tank and the battalion commanders had a command tank of the appropriate type. Thus the tank regiment contained 87 tanks; 44 medium and 43 light (as well as 2 reserve tanks per squadron).

The platoon leader in each Hotchkiss platoon received a tank with the new APX-R1 turret armed with the 37mm SA38 L34 gun instead of the normal APX-R turret armed with the shorter 37mm SA18 L20 gun. This is hard to represent if you use the scale 1 platoon equals 1 model tank.

RD - Régiment de Découverte

The Deep Reconnaissance Regiment (RD - Régiment de Découverte) contained two AMD reconnaissance squadrons and two motorcycle squadrons. The regiment was organized into 2 battalions comprising one reconnaissance squadron and one motorcycle squadron. Each battalion headquarters was issued with an unarmed Panhard 178 fitted with a long-range radio.

Escadron d'AMD - AutoMitrailleuses de Découverte

The reconnaissance squadrons (Escadron AMD - AutoMitrailleuses de Découverte) were equipped with the Panhard 178 armoured cars and contained:

  • 1 command P178 AMD 35
  • 4 platoons of 5 P178 AMD 35s each

Escadron Motocycliste

The motorcycle squadrons (Escadron Motocycliste) consisted of:

  • 1 command platoon & 1 60mm mortar section
  • 4 motorcycle platoons each
    • 1 command section, 6 men, 1 VB grenade launcher, 3 motorcycles with side-cars.
    • 2 combat sections each with 10 men, 2 Chatellerault Fusil-Mitrailleur FM 24/29 7.5mm LMGs, 1 VB grenade launcher, 5 motorcycles with side-cars.

RDP - Régiment de Dragons Portés

The Motorised Dragoon Regiment (RDP - Régiment de Dragons Portés) differed depending on whether it was attached to a DLM or a DLC. This describes the RDP which was attached to a DLM. The RDP consisted of 3 identical BDP battalions.

The truck intended to carry the dragoons (VDP) was originally the Lorraine 28 VDP. The Laffly S20 TL VDP was a better vehicle and it equipped the 2nd and 3rd  DLM although the 1st DLM still had the older Lorraine 28 VDP.

BDP - Bataillon de Dragons Portés

The Motorised Dragoon Battalion (BDP - Battalion de Dragons Portés) attached to a DLM was organised as follows:

  • 1 AMR Reconnaissance Squadron
  • 1 Motorcycle Squadron (same organisation as in RD above)
  • 2 Motorised Rifle Squadrons
  • 1 Heavy Weapons Squadron

Escadron d'AMR - Automitrailleuse de Reconnaissance

The reconnaissance squadron (AMR - Automitrailleuse de Reconnaissance) was equipped with the Renault AMR 35 ZT1. The AMR 35 was no longer in production and when the 3rd DLM was raised so its reconnaissance squadron received H39 light tanks instead. The squadron contained:

  • 1 command platoon with 1 AMR,
  • 4 platoons each of 5 AMRs

Escadron de Fusiliers Voltigeurs

The BDP contained two rifle squadrons. Each rifle squadron contained the following:

  • 1 command platoon & 1 60mm mortar section in Laffly S20 TL trucks
  • 3 rifle platoons each with 
    • 1 command in a Laffly S20 TL truck
    • 3 combat sections each  in a Laffly S20 TL truck
  • 1 machinegun platoon with 
    • 2 machinegun sections each with 2 HMG and 1 Laffly S20 TL truck.

Escadron de Mitrailleuses et Engins

The heavy weapons squadron contained:

  • 1 command platoon in 3 Laffly S20 TL trucks.
  • 2 machinegun platoons each with
    • 2 machinegun sections each with 2 HMG and 1 Laffly S20 TL truck.
  • 1 mortar platoon with
    • 2 mortar sections each with 2 81mm mortars and 2 Laffly S20 TL trucks
  • 1 anti-tank platoon with
    • 2 anti-tank sections each with 2 25mm SA mle 34 anti-tank guns and 2 Laffly S20 TL trucks. The guns are carried not towed.

RATTT - Regiment d'Artillerie Tractée Tout Terrain

The motorised field artillery regiment, cross-country (RATTT - Régiment d'Artillerie Tractée Tous Terrains) contained three battalions of field artillery: two bcompagnie d'équipage de pont attalions of 12 75mm mle 1897 guns and one battalion of 12 105C mle 1936 howitzers. These were organised in batteries of 4 guns each.

It was intended to tow the guns using Laffly S15T trucks, but insuficient were available so the older Unic P107 BU halftracks were still in use in many units.

BDAC - Batterie Divisionnaire Antichar

The divisional anti-tank battery (BDAC – Batterie Divisionnaire Anti Char) was attached to the RATTT and contained 8 artillery-crewed 47mm SA37 APX anti-tank guns. The battery was split into 4 sections each of two guns. It was intended to tow the guns using Laffly W15T trucks, but insuficient were available so the older Citroen P17 were still in use in many units.

BCA - Batterie Contre-Avions

The anti-aircraft battery was attached to the RATTT and contained 6 artillery-crewed Hotchkiss 25mm mle 1939 anti-aircraft guns. It was intended to tow the guns using Laffly W15T trucks, but insuficient were available so the older Citroen P17 were still in use in many units.

EDAC - Escadron Divisionnaire Antichar

The divisional anti-tank squadron (EDAC – Escadron Divisionnaire Anti Char) contained 12 cavalry-crewed 25mm SA-L mle 37 anti-tank guns. The battery was split into 3 platoons each of four guns. The guns were towed by Laffly V15T trucks. 

Compagnie de Sapeurs-Mineurs Portés

The motorised engineer company (compagnie de sapeurs-mineurs portés) equipped the DLM, DCR and DLC. The company consisted of 3 platoons each with 3 squads. The HQ had an all-terrain reconnaissance car. The first platoon was carried in 12 all-terrain trucks (probably Lorraine 28). The second platoon was carried in trucks and the third platoon on motorcycles.

The engineers were not intended to be used as combat troops. They were mainly armed with small arms (revolvers/pistols for the officers and rifles/carbines for the men). There were no LMGs. There were 2 Hotchkiss mle 1914 MGs or Saint-Etienne mle 1907 MGs in each company, mounted on tripods and used as AAMGs for convoy protection when moving.

The compagnie de sapeurs-mineurs portés in the DLM/DCR/DLM differed from the compagnie de sapeurs-mineurs motorisé in the DIM in that the porté company was fully motorised carrying both equipment and engineers in motor vehicles. The motorisé company carried its equipment in motor vehicles but the engineers marched on foot.

In 1939 the Enginner regiments and battalions were disbanded and the companies were then officially independent. However these remained under the command of the engineer HQ at the division level.

Compagnie d'équipage de pont

The bridging company (compagnie d'équipage de pont) consisted of 3 platoons each with 3 squads. It equipment included 4 all-terrain tractors, 37 trucks or all-terrain tractors, 32 trailers (24 long and 8 short), 22 barges and 8 propellers. The all-terrain tractors were often Unic P107 BU (engineer version) halftracks.

Such a company is able to built a complete bridge for vehicles of :

  • 8 tons - 180 m long
  • 13 tons - 142 m long
  • 18 tons - 104 m long

Additionally they could build infantry footbridges and use the barges to ship troops accross larges rivers.