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1945/46

1944

Colombian tank battalions 1942
The Colombians difficulty in handling large formations coupled with a limited military budget and logistical difficulties resulted in a restructuring of the Tank battalions in 1942 into smaller more flexible formations. As a result the number of battalions available tripled while standardization of the tank types by and large was retained. The venerable AT-17 and AT-27's were taken out of service and the AT-34 was selected to replace them as training tanks and in some HQ units. In addition the T-1 armored cars were taken out of service and replaced with additional T-2 armored cars were needed. An order was placed for AT-36 and AT-37 tanks as well as T-3 armored cars to form heavy and medium units. Also, several separate tank battalions were created using the tanks left over from restructuring and were used to support infantry units.

1st/2nd battalions
HQ 1 AT-35 tank

Recon section 3 T-5 AC
Recon platoon 3 HT-5 halftracks

1st Tk Company (4 Platoons with 5 Tanks, total 10 AT-35's)
2nd Tk Company (4 Platoons with 5 Tanks, total 10 AT-35's)
3rd Tk Company (4 Platoons with 5 Tanks, total 10 AT-35's)

3rd/4th battalions
HQ 1 AT-34 tank

Recon section 3 T-5 AC
Recon platoon 3 HT-5 halftracks

1st Tk Company (4 Platoons with 5 Tanks, total 10 AT-31 1M1's)
2nd Tk Company (4 Platoons with 5 Tanks, total 10 AT-31 1M1's)
3rd Tk Company (4 Platoons with 5 Tanks, total 10 AT-31 1M1's)

5th/6th battalions
HQ 1 AT-33 tank

Recon section 3 T-5 AC
Recon platoon 3 HT-5 halftracks

1st Tk Company (4 Platoons with 5 Tanks, total 10 AT-33's)
2nd Tk Company (4 Platoons with 5 Tanks, total 10 AT-33's)
3rd Tk Company (4 Platoons with 5 Tanks, total 10 AT-33's)


7th/8th battalions
HQ 1 AT-34 tank

Recon section 3 T-5 AC
Recon platoon 3 HT-5 halftracks

1st Tk Company (4 Platoons with 5 Tanks, total 10 AT-31 1M1's)
2nd Tk Company (4 Platoons with 5 Tanks, total 10 AT-31 1M1's)
3rd Tk Company (4 Platoons with 5 Tanks, total 10 AT-31 1M1's)

9th separate tank battalion
HQ 1 AT-35 tank, 1 motorcycle, 1 cargo truck

1st Recon section 3 T-5 AC
1st Recon platoon 3 HT-5 halftracks

1st AC Company (4 plt with 5 AC, total 20 T-2 )

1st Tk Company (4 Platoons with 5 Tanks, total 10 AT-35)
2nd Tk Company (4 Platoons with 5 Tanks, total 10 AT-35)
3rd Tk Company (4 Platoons with 5 Tanks, total 10 AT-31 1M1's)
Train
1 motorcycle, 3 staff cars, 22 cargo trucks, 6 workshop vehicles, 4 tractors


10th separate tank battalion
HQ 1 AT-33 tank, 1 motorcycle, 1 cargo truck

1st Recon section 3 T-5 AC
1st Recon platoon 3 HT-5 halftracks

1st AC Company (4 plt with 5 AC, total 20 T-2 )

1st Tk Company (4 Platoons with 5 Tanks, total 10 AT-33)
2nd Tk Company (4 Platoons with 5 Tanks, total 10 AT-33)
3rd Tk Company (4 Platoons with 5 Tanks, total 10 AT-31 1M1's)
Train
1 motorcycle, 3 staff cars, 22 cargo trucks, 6 workshop vehicles, 4 tractors

11th/12 separate tank battalions
HQ 1 AT-34 tank, 1 motorcycle, 1 cargo truck

1st Recon section 3 T-5 AC
1st Recon platoon 3 HT-5 halftracks

1st AC Company (4 plt with 5 AC, total 20 T-2 )

1st Tk Company (4 Platoons with 5 Tanks, total 10 AT-31 1M1's)
2nd Tk Company (4 Platoons with 5 Tanks, total 10 AT-31 1M1's)
3rd Tk Company (4 Platoons with 5 Tanks, total 10 AT-31 1M1's)
Train
1 motorcycle, 3 staff cars, 22 cargo trucks, 6 workshop vehicles, 4 tractors


209th/210th battalions (training)
HQ 1 AT-33 tank, 1 motorcycle, 1 cargo truck

1st Recon section 3 T-5 AC
1st Recon platoon 3 HT-5 halftracks

1st AC Company (4 plt with 5 AC, total 20 T-2 )

1st Tk Company (4 Platoons with 5 Tanks, total 10 AT-34's)
2nd Tk Company (4 Platoons with 5 Tanks, total 10 AT-34's)
3rd Tk Company (4 Platoons with 5 Tanks, total 10 AT-34's)

Colombian tank battalions 1940

1st battalion
HQ 1 AT-35 tank, 1 T-5 AC
1st AC Company (4 plt with 5 AC, total 20 T-2 )
2nd AC Company (4 plt with 5 AC, total 20 T-1 )

HQ 1 AT-35 tank
1st Tk Company (4 Platoons with 5 Tanks, total 20 AT-35's)
2nd Tk Company (4 Platoons with 5 Tanks, total 20 AT-35's)
3rd Tk Company (4 Platoons with 5 Tanks, total 20 AT-35's)
4th Tk Company (4 Platoons with 5 Tanks, total 20 AT-35's)

2nd battalion
HQ 1 AT-31 1M1 tank, 1 T-5 AC
1st AC Company (4 plt with 5 AC, total 20 T-2 )
2nd AC Company (4 plt with 5 AC, total 20 T-1 )

HQ 1 AT-31 1M1 mk 1 tank
1st Tk Company (4 Platoons with 5 Tanks, total 20 AT-31 1M1 mk 1's)
2nd Tk Company (4 Platoons with 5 Tanks, total 20 AT-31 1M1 mk 1's)
3rd Tk Company (4 Platoons with 5 Tanks, total 20 AT-31 1M1 mk 1's)
4th Tk Company (4 Platoons with 5 Tanks, total 20 AT-31 1M1 mk 1's)

3rd battalion
HQ 1 AT-33 tank, 1 T-5 AC
1st AC Company (4 plt with 5 AC, total 20 T-2 )
2nd AC Company (4 plt with 5 AC, total 20 T-1 )

HQ 1 AT-33 tank
1st Tk Company (4 Platoons with 5 Tanks, total 20 AT-33's)
2nd Tk Company (4 Platoons with 5 Tanks, total 20 AT-33's)
3rd Tk Company (4 Platoons with 5 Tanks, total 20 AT-33's)
4th Tk Company (4 Platoons with 5 Tanks, total 20 AT-33's)

4th battalion
HQ 1 AT-33 1M1 tank, 1 T-5 AC
1st AC Company (4 plt with 5 AC, total 20 T-2 )
2nd AC Company (4 plt with 5 AC, total 20 T-1 )

HQ 1 AT-31 1M1 mk1 tank
1st Tk Company (4 Platoons with 5 Tanks, total 20 AT-31 1M1 mk 1's)
2nd Tk Company (4 Platoons with 5 Tanks, total 20 AT-31 1M1 mk 1's)
3rd Tk Company (4 Platoons with 5 Tanks, total 20 AT-31 1M1 mk 1's)
4th Tk Company (4 Platoons with 5 Tanks, total 20 AT-31 1M1 mk 1's)

5th battalion (training)
HQ 1 AT-27 tank, 1 NH-28 AC
1st AC Company (4 plt with 5 AC, total 20 NH-28 )
2nd AC Company (4 plt with 5 AC, total 20 NH-28 )

HQ 1 AT-27 tank
1st Tk Company (4 Platoons with 5 Tanks, total 20 AT-27's)
2nd Tk Company (4 Platoons with 5 Tanks, total 20 AT-27's)
3rd Tk Company (4 Platoons with 5 Tanks, total 20 AT-17's)
4th Tk Company (4 Platoons with 5 Tanks, total 20 AT-17's)

Tanks in service as of 1/12/1940

80 AT-35 medum cruiser tanks
80 AT-33 medium infantry tanks ordered
60 AT-27 Infantry tanks (40 training, 20 reserve)
180 AT-31 1m1 light cruiser tanks (20 in reserve)
180 AT-17 light infantry tanks (140 in reserve/40 training)
80 T-2 AC
80 T-1 AC
200 T-5 armoured cars
40 NH-28 AC in reserve, 40 training
600 Napier Hall General Purpose Vehicles

Vehicles ordered in 1940

40 T-2 AC
100 T5 armoured cars
200 Napier Hall General Purpose Vehicles

168 NH-20 AC taken out of service

Tank battalions, 1939

The Colombian Battalion is modeled after the Atlantean method, three such battalions are in service with a forth forming.

1st Tank battalion

HQ 1 tank, 1 AC
1st AC Company (4 plt with 5 AC, total 20 NH-28 )
2nd AC Company (4 plt with 5 AC, total 20 NH-28 )

HQ 1 tank
1st Tk Company (4 Platoons with 5 Tanks, total 20 AT-27's)
2nd Tk Company (4 Platoons with 5 Tanks, total 20 AT-31's)
3rd Tk Company (4 Platoons with 5 Tanks, total 20 AT-31's)
4th Tk Company (4 Platoons with 5 Tanks, total 20 AT-31's)

2nd and 3rd tank battalions

HQ 1 tank, 1 AC
1st AC Company (4 plt with 5 AC, total 20 T-2)
2nd AC Company (4 plt with 5 AC, total 20 T-1)

HQ 1 tank
1st Tk Company (4 Platoons with 5 Tanks, total 20 AT-35's)
2nd Tk Company (4 Platoons with 5 Tanks, total 20 AT-31's)
3rd Tk Company (4 Platoons with 5 Tanks, total 20 AT-31's)
4th Tk Company (4 Platoons with 5 Tanks, total 20 AT-31's)

Reserve: 22 tanks (6 AT-27, 75 AT-17)
Total: 41 AC, 102 tanks

A forth Battalion is being requested and is expected to be equiped with the latest Atlantean (1) and Mexican (2) vehicles.

Note 1- The T-1 and T2 armoured cars and the AT-35
Note 2- The Mexican produced AT-31 1M1

With the order of 20 T-2 AC, 40 T-1 AC, 20 AT-35 medum cruiser tanks and 180 AT-31 1m1 light cruiser tanks, the second and third armoured battalions will have their AT-17's placed in reserve along with 20 of the new AT-31 1M1's while the NH-28 armoured cars will also be placed in reserve as the new T-1/T-2 armoured car designs replace them.

Vehicles in service

60 AT-35 medum cruiser tanks
60 AT-33 medium infantry tanks ordered
60 AT-27 Infantry tanks
180 AT-31 1m1 light cruiser tanks
180 AT-17 light infantry tanks (reserve/training)
40 T-2 AC
80 T-1 AC
100 T-5 armoured cars
80 NH-28 AC (to replace 80 NH-20 in frontline service)
400 Napier Hall General Purpose Vehicles

Vehicles ordered

40 T-2 AC, Ordered
20 AT-35 medum cruiser tanks, Ordered
20 AT-33 medium infantry tanks ordered
100 T5 armoured cars ordered
200 Napier Hall General Purpose Vehicles ordered

168 NH-20 AC taken out of service and placed in reserve

Tank battalions, 1937

The Colombian Battalion is modeled after the Atlantean method, three such battalions are in service.

HQ 1 tank, 1 AC
1st AC Company (4 plt with 5 AC, total 20 NH-28 )
2nd AC Company (4 plt with 5 AC, total 20 NH-28 )

HQ 1 tank
1st Tk Company (4 Platoons with 5 Tanks, total 20 AT-27's)
2nd Tk Company (4 Platoons with 5 Tanks, total 20 AT-17's)
3rd Tk Company (4 Platoons with 5 Tanks, total 20 AT-17's)
4th Tk Company (4 Platoons with 5 Tanks, total 20 AT-17's)

Reserve: 22 tanks (6 AT-27, 15 AT-17)
Total: 41 AC, 102 tanks

A forth Battalion is being requested and is expected to be equiped with the latest Atlantean (1) and Mexican (2) vehicles.

Note 1- The T-1 and T2 armoured cars and the AT-35
Note 2- The Mexican produced AT-31 1M1

With the order of 20 T-2 AC, 40 T-1 AC, 20 AT-35 medum cruiser tanks and 180 AT-31 1m1 light cruiser tanks, the second and third armoured battalions will have their AT-17's placed in reserve along with 60 of the new AT-31 1M1's while the NH-28 armoured cars will also be placed in reserve as the new T-1/T-2 armoured car designs replace them.