Infantry technology

One-Time Techs

Name	Prerequisite	Difficulty	Research Bonus	Year	Knowledge on Completion	Effects
Airborne Infantry	Infantry Anti-Tank Weapons - 3 Infantry Small Arms - 3 Infantry Support Weapons - 3 Light Artillery - 3	3	Infantry Practical 0.6 Infantry Theory 0.3 Land Combat Experience 0.1	1939	Infantry Theory	Paratroopers - Activated Rangers - Activated
Airborne Warfare Equipment	Airborne Infantry	7	Land Combat Experience 0.7 Grand Battleplan Doctrine 0.3	1941	Grand Battleplan Doctrine	Gurkhas - Supply Consumption -0.1, Transport Weight -1 Paratroopers - Supply Consumption -0.1, Transport Weight -1 Rangers - Supply Consumption -0.1, Transport Weight -1
Amphibious Warfare Equipment	Marine Infantry	7	Land Combat Experience 0.7 Superior Firepower Doctrine 0.3	1940	Superior Firepower Doctrine	Guards - Amphibious: Attack +10% Marine - Amphibious: Attack +10%
Arctic Warfare Equipment	Infantry Anti-Tank Weapons - 2 Infantry Small Arms - 2 Infantry Support Weapons - 2 Light Artillery - 2	4	Land Combat Experience 0.7 Human Wave Doctrine 0.3	1936	Human Wave Doctrine	Alpini - Arctic: Attrition -1% Chasseurs Alpins - Arctic: Attrition -1% Guards - Arctic: Attrition -1% Gurkhas - Arctic: Attrition -1% Imperial Guards - Arctic: Attrition -1% Infantry - Arctic: Attrition -1% Marine - Arctic: Attrition -1% Mountain - Arctic: Attrition -1% Paratroopers - Arctic: Attrition -1% Rangers - Arctic: Attrition -1% Waffen SS - Arctic: Attrition -1%
Desert Warfare Equipment	Infantry Anti-Tank Weapons - 2 Infantry Small Arms - 2 Infantry Support Weapons - 2 Light Artillery - 2	4	Land Combat Experience 0.7 Spearhead Doctrine 0.3	1938	Spearhead Doctrine	Alpini - Desert: Attrition -1% Chasseurs Alpins - Desert: Attrition -1% Guards - Desert: Attrition -1% Gurkhas - Desert: Attrition -1% Imperial Guards - Desert: Attrition -1% Infantry - Desert: Attrition -1% Marine - Desert: Attrition -1% Mountain - Desert: Attrition -1% Paratroopers - Desert: Attrition -1% Rangers - Desert: Attrition -1% Waffen SS - Desert: Attrition -1%
Engineer Brigade	Industrial Production (Industry technology) - 1	3	Infantry Practical 0.6 Infantry Theory 0.3 Land Combat Experience 0.1	1935	Infantry Theory	Engineer - Activated
Infantry Division	Militia Anti-Tank Weapons - 1 Militia Light Artillery - 1 Militia Small Arms - 1 Militia Support Weapons- 1	1	Infantry Practical 0.7 Infantry Theory 0.3	1918	Infantry Theory	Infantry - Activated Guards - Activated
Jungle Warfare Equipment	Infantry Anti-Tank Weapons - 2 Infantry Small Arms - 2 Infantry Support Weapons - 2 Light Artillery - 2	4	Land Combat Experience 0.7 Grand Battleplan Doctrine 0.3	1939	Grand Battleplan Doctrine	Infantry - Jungle: Attrition -1 Marine - Jungle: Attrition -1 Mountain - Jungle: Attrition -1 Paratroopers - Jungle: Attrition -1
Marine Infantry	Infantry Anti-Tank Weapons - 2 Infantry Small Arms - 2 Infantry Support Weapons - 2 Light Artillery - 2	3	Infantry Practical 0.6 Infantry Theory 0.3 Land Combat Experience 0.1	1937	Infantry Theory	Imperial Guards - Activated Marine - Activated
Motorised Infantry	Cavalry Anti-Tank Weapons - 3 Cavalry Light Artillery - 3 Cavalry Small Arms - 3 Cavalry Support Weapons - 3	3	Mobile Unit Practical 0.6 Mobile Unit Theory 0.3 Armour Practical 0.1	1938	Mobile Unit Theory	Motorised - Activated Motorised A-A - Activated Waffen SS - Activated
Mountain Infantry	Infantry Anti-Tank Weapons - 1 Infantry Small Arms - 1 Infantry Support Weapons - 1 Light Artillery - 1	3	Infantry Practical 0.7 Infantry Theory 0.3	1918	Infantry Theory	Alpini - Activated Chasseurs Alpins - Activated Gurkhas - Activated Mountain - Activated
Mountain Warfare Equipment	Infantry Anti-Tank Weapons - 2 Infantry Small Arms - 2 Infantry Support Weapons - 2 Light Artillery - 2	4	Land Combat Experience 0.7 Human Wave Doctrine 0.3	1936	Human Wave Doctrine	Alpini - Mountains: Attrition -1.5%, Attack +10%, Defence +10% Chasseurs Alpins - Mountains: Attrition -1.5%, Attack +10%, Defence +10% Guards - Mountains: Attrition -1% Gurkhas - Mountains: Attrition -1.5%, Attack +10%, Defence +10% Imperial Guards - Mountains: Attrition -1% Infantry - Mountains: Attrition -1% Marine - Mountains: Attrition -1% Mountain - Mountains: Attrition -1.5%, Attack +10%, Defence +10% Paratroopers - Mountains: Attrition -1% Rangers - Mountains: Attrition -1% Waffen SS - Mountains: Attrition -1%
Night Fighting Equipment	Radio Technology (Industry technology)	10	Infantry Practical 0.6 Infantry Theory 0.3 Land Combat Experience 0.1	1944	Infantry Theory	Alpini - Night: Attack +10% Chasseurs Alpins - Night: Attack +10% Guards - Night: Attack +10% Gurkhas - Night: Attack +10% Imperial Guards - Night: Attack +10% Infantry - Night: Attack +10% Marine - Night: Attack +10% Mountain - Night: Attack +10% Paratroopers - Night: Attack +10% Rangers - Night: Attack +10% Waffen SS - Night: Attack +10%

Note, while appearing on the Infantry tab, Mechanized Infantry is located in the data file for Armour technology.

Amphibious Warfare Equipment currently affects Guards. It is most likely a bug, with the bonus intended for Imperial Guards, which unlike Guards are activated by the Marine Infantry technology.

Scaled Techs

Maximum level of 12

Name	Prerequisite	Difficulty	Research Bonus	Start Year	First Offset	Additional Offset	Knowledge on Completion	Effects
Assault Weapons	Engineer Brigade	3	Infantry Practical 0.6 Infantry Theory 0.3 Superior Firepower Doctrine 0.1	1939	1940	2	Infantry Theory	Engineer - Soft Attack +0.2, Hard Attack +0.2, Fort: Attack +10$, Forest: Attack +1%, Jungle: Attack +2%, Urban: Attack +2%
Bridging Equipment	Engineer Brigade	3	Infantry Practical 0.6 Infantry Theory 0.3 Spearhead Doctrine 0.1	1939	1940	2	Infantry Theory	Engineer - River: Attack +5%, Movement +5%
Cavalry Anti-Tank Weapons		0	Mobile Unit Practical 0.6 Mobile Unit Theory 0.3 Artillery Practical 0.1	1918	1934	2	Mobile Unit Theory	Cavalry - Hard Attack +0.1, Piercing Attack +0.5, Maximum Speed -0.01
Cavalry Light Artillery		0	Mobile Unit Practical 0.5 Mobile Unit Theory 0.3 Artillery Practical 0.2	1918	1934	2	Mobile Unit Theory	Cavalry - Toughness +0.4, Maximum Speed -0.03
Cavalry Small Arms		0	Mobile Unit Practical 0.6 Mobile Unit Theory 0.3 Human Wave Doctrine 0.1	1918	1934	2	Mobile Unit Theory	Cavalry - Soft Attack +0.5
Cavalry Support Weapons		0	Mobile Unit Practical 0.6 Mobile Unit Theory 0.3 Militia Practical 0.1	1918	1934	2	Mobile Unit Theory	Cavalry - Defensiveness +0.5, Maximum Speed -0.02
Improved Security Units		1	Infantry Practical 0.7 Infantry Theory 0.3	1939	1942	3	Infantry Theory	Military Police - Suppression +2
Infantry Anti-Tank Weapons	Infantry Division	1	Infantry Practical 0.6 Infantry Theory 0.3 Artillery Practical 0.1	1918	1936	2	Infantry Theory	Alpini - Hard Attack +0.25, Piercing Attack +1 Chasseurs Alpins - Hard Attack +0.25, Piercing Attack +1 Guards - Hard Attack +0.25, Piercing Attack +1 Gurkhas - Hard Attack +0.25, Piercing Attack +1 Imperial Guards - Hard Attack +0.25, Piercing Attack +1 Infantry - Hard Attack +0.25, Piercing Attack +1 Marine - Hard Attack +0.2, Piercing Attack +0.5 Mechanized - Hard Attack +0.25, Piercing Attack +1 Motorized - Hard Attack +0.25, Piercing Attack +1 Mountain - Hard Attack +0.2, Piercing Attack +0.5 Paratroopers - Hard Attack +0.2, Piercing Attack +0.5 Rangers - Hard Attack +0.25, Piercing Attack +1 Waffen SS - Hard Attack +0.25, Piercing Attack +1
Infantry Support Weapons	Infantry Division	0	Infantry Practical 0.6 Infantry Theory 0.3 Superior Firepower Doctrine 0.1	1918	1936	2	Infantry Theory	Alpini - Defensiveness +0.8 Chasseurs Alpins - Defensiveness +0.8 Guards - Defensiveness +0.8 Gurkhas - Defensiveness +0.8 Imperial Guards - Defensiveness +0.8 Infantry - Defensiveness +0.8 Marine - Defensiveness +0.8 Mechanized - Defensiveness +0.8 Motorized - Defensiveness +0.8 Mountain - Defensiveness +0.8 Paratroopers - Defensiveness +0.8 Rangers - Defensiveness +0.8 Waffen SS - Defensiveness +0.8
Light Artillery	Infantry Division	1	Infantry Practical 0.5 Infantry Theory 0.3 Artillery Practical 0.2	1918	1936	2	Infantry Theory	Alpini - Toughness +0.6 Chasseurs Alpins - Toughness +0.6 Guards - Toughness +0.6 Gurkhas - Toughness +0.6 Imperial Guards - Toughness +0.6 Infantry - Toughness +0.6 Marine - Toughness +0.6 Mechanized - Toughness +0.6 Motorized - Toughness +0.6 Mountain - Toughness +0.6 Paratroopers - Toughness +0.6 Rangers - Toughness +0.6 Waffen SS - Toughness +0.6
Militia Anti-Tank Weapons		0	Militia Practical 0.6 Militia Theory 0.3 Artillery Practical 0.1	1918	1934	2	Militia Theory	Militia - Hard Attack +0.1, Piercing Attack +0.5 Partisans - Hard Attack +0.1, Piercing Attack +0.5 Garrison - Hard Attack +0.15, Piercing Attack +0.5
Militia Light Artillery		0	Militia Practical 0.5 Militia Theory 0.3 Artillery Practical 0.2	1918	1934	2	Militia Theory	Militia - Toughness +0.1 Partisans - Toughness +0.1 Garrison - Toughness +0.1
Militia Small Arms		0	Militia Practical 0.6 Militia Theory 0.3 Human Wave Theory 0.1	1918	1934	2	Militia Theory	Land Fort - Activated Militia - Soft Attack+0.3 Partisans - Soft Attack +0.3 Garrison - Soft Attack +0.4
Militia Support Weapons		0	Militia Practical 0.6 Militia Theory 0.3 Infantry Practical 0.1	1918	1934	2	Militia Theory	Underground Resistance - Activate Militia - Defensiveness +0.5 Partisans - Defensiveness +0.5 Garrison - Defensiveness +0.5
Small Arms	Infantry Division	0	Infantry Practical 0.6 Infantry Theory 0.3 Grand Battleplan Doctrine 0.1	1918	1936	2	Infantry Theory	Alpini - Soft Attack +0.6 Chasseurs Alpins - Soft Attack +0.6 Guards - Soft Attack +0.6 Gurkhas - Soft Attack +0.6 Imperial Guards - Soft Attack +0.6 Infantry - Soft Attack +0.6 Marine - Soft Attack +0.6 Mechanized - Soft Attack +0.6 Motorized - Soft Attack +0.6 Mountain - Soft Attack +0.6 Paratroopers - Soft Attack +0.6 Rangers - Soft Attack +0.6 Waffen SS - Soft Attack +0.6