Infantry

All 43 Infantry research technologies from HOI4 v1.19 — real costs, years, prerequisites and unlocks mined from the game files.

Infantry technologies (43 entries)
Tech	Cost	Year	Prerequisites	Leads to	Unlocks	Effects
`Infantry Weapons` infantry_weapons	1.5	1918	—	Infantry Equipment I	Equipment: `infantry_equipment_0` Units: `infantry` Modules: `tank_heavy_machine_gun`, `secondary_turret_hmg`, `additional_machine_guns`	—
`Early Truck` Thunder at Our Gates tech_trucks	1.5	1936	—	Motorized Infantry, $gw_armored_car_equipment$	Equipment: `motorized_equipment_0` Units: `mot_anti_tank_brigade,mot_artillery_brigade,mot_anti_air_brigade`, `[object Object]` Modules: `tank_wheeled_suspension`	—
`Support Weapons I` support_weapons	1.5	1918	—	Support Weapons II	Units: `fire_support`, `mot_fire_support`	—
$gw_armored_car_equipment$ La Resistance armored_car1	2	1914	Early Truck	$armored_car_equipment_1$	Equipment: `gw_armored_car_equipment` Units: `armored_car`	—
`Infantry Equipment I` infantry_weapons1	1.5	1936	Infantry Weapons	Improved Infantry Equipment I	Equipment: `infantry_equipment_1`	—
`Motorized Infantry` motorised_infantry Sub-technologies: motorized_rocket_unit Has a scripted effect on completion.	2	1936	Early Truck	Mechanized Equipment I	Equipment: `motorized_equipment_1` Units: `motorized`	`mot_fire_support`: Breakthrough +0.1
`Marines I` marines Has a scripted effect on completion.	2	1936	—	Marines II	Units: `marine`	—
`Paratroopers I` Thunder at Our Gates paratroopers Has a scripted effect on completion.	2	1936	—	Paratroopers II	Units: `paratrooper`, `[object Object]`	—
`Rangers I` No Compromise, No Surrender rangers_tech Has a scripted effect on completion.	2	1936	—	Rangers II	Units: `ranger_battalion`	—
`Mountain Infantry I` tech_mountaineers Has a scripted effect on completion.	2	1936	—	Mountain Infantry II	Units: `mountaineers`	—
`Improved Infantry Equipment I` infantry_weapons2	1.5	1938	Infantry Equipment I	Infantry Equipment II	—	`category_light_infantry`: Soft Attack +0.05 `category_cavalry`: Soft Attack +0.05 `category_vehicle_infantry`: Soft Attack +0.1
`Support Weapons II` support_weapons2	1.5	1938	Support Weapons I	Support Weapons III	—	`fire_support`: Defense +0.15 `fire_support`: Breakthrough +0.15 `fire_support`: Soft Attack +0.1 `mot_fire_support`: Defense +0.15 `mot_fire_support`: Breakthrough +0.05 `mot_fire_support`: Soft Attack +0.1
`Special Forces` Arms Against Tyranny tech_special_forces	2	1938	—	Advanced Special Forces Training, Expanded Special Forces Program	—	`category_special_forces`: Acclimatization Hot Climate Gain Factor +0.05 `category_special_forces`: Acclimatization Cold Climate Gain Factor +0.05
`Infantry Equipment II` improved_infantry_weapons	2	1939	Improved Infantry Equipment I	Improved Infantry Equipment II, Infantry Anti-Tank I	Equipment: `infantry_equipment_2`	—
`Marines II` marines2	1.5	1939	Marines I	Marines III	—	`marine`: Max Organisation +5 `marine`: Soft Attack +0.05
`Paratroopers II` paratroopers2	1.5	1939	Paratroopers I	Paratroopers III	—	`paratrooper`: Max Organisation +5 `paratrooper`: Soft Attack +0.05
`Rangers II` rangers_tech2	1.5	1939	Rangers I	Rangers III	—	`ranger_battalion`: Max Organisation +5 `ranger_battalion`: Soft Attack +0.05
`Mountain Infantry II` tech_mountaineers2	1.5	1939	Mountain Infantry I	Mountain Infantry III	—	`mountaineers`: Max Organisation +5 `mountaineers`: Soft Attack +0.05
`Improved Infantry Equipment II` improved_infantry_weapons_2	2	1940	Infantry Equipment II	Infantry Equipment III	—	`category_light_infantry`: Soft Attack +0.05 `category_cavalry`: Soft Attack +0.05 `category_vehicle_infantry`: Soft Attack +0.1
`Mechanized Equipment I` mechanised_infantry	2	1940	Motorized Infantry	Mechanized Equipment II, Amphibious Tractors	Equipment: `mechanized_equipment_1` Units: `mechanized` Modules: `tank_half_track_suspension`	`mot_fire_support`: Breakthrough +0.1 `mot_fire_support`: Soft Attack +0.05 `motorized`: Hardness +1 `mot_artillery_brigade`: Hardness +1 `mot_anti_tank_brigade`: Hardness +1 `mot_anti_air_brigade`: Hardness +1 `mot_rocket_artillery_brigade`: Hardness +1
`Support Weapons III` support_weapons3	1.5	1940	Support Weapons II	Support Weapons IV	—	`fire_support`: Defense +0.15 `fire_support`: Breakthrough +0.15 `fire_support`: Soft Attack +0.1 `mot_fire_support`: Defense +0.15 `mot_fire_support`: Breakthrough +0.05 `mot_fire_support`: Soft Attack +0.1
$armored_car_equipment_1$ armored_car2	2	1940	$gw_armored_car_equipment$	$armored_car_equipment_2$	Equipment: `armored_car_equipment_1`	—
`Advanced Special Forces Training` advanced_special_forces	2	1940	Special Forces XOR Expanded Special Forces Program	Extreme Environment Training	—	`category_special_forces`: Max Organisation +5 `category_special_forces`: Defense +0.05 Special Forces Training Time Factor +0.1
`Expanded Special Forces Program` improved_special_forces	2	1940	Special Forces XOR Advanced Special Forces Training	Survival Training	—	Special Forces Cap +0.1 Special Forces Training Time Factor -0.1
`Amphibious Tractors` Man the Guns amphibious_mechanized_infantry	2	1941	Mechanized Equipment I	Improved Amphibious Tractors	Equipment: `amphibious_mechanized_equipment_1` Units: `amphibious_mechanized`	—
`Infantry Equipment III` advanced_infantry_weapons	2	1942	Improved Infantry Equipment II	Improved Infantry Equipment III	Equipment: `infantry_equipment_3`	—
`Mechanized Equipment II` mechanised_infantry2	2	1942	Mechanized Equipment I	Mechanized Equipment III	Equipment: `mechanized_equipment_2`	`mot_fire_support`: Breakthrough +0.1 `mot_fire_support`: Soft Attack +0.05
`Support Weapons IV` support_weapons4	1.5	1942	Support Weapons III	—	—	`fire_support`: Defense +0.15 `fire_support`: Breakthrough +0.15 `fire_support`: Soft Attack +0.1 `mot_fire_support`: Defense +0.15 `mot_fire_support`: Breakthrough +0.05 `mot_fire_support`: Soft Attack +0.1
`Infantry Anti-Tank I` infantry_at	1.5	1942	Infantry Equipment II	Infantry Anti-Tank II	—	`category_all_infantry`: Hard Attack +0.25 `category_all_infantry`: Ap Attack +1 `category_cavalry`: Hard Attack +0.1 `category_cavalry`: Ap Attack +0.4 `fire_support`: Hard Attack +0.15 `fire_support`: Ap Attack +0.5 `mot_fire_support`: Hard Attack +0.15 `mot_fire_support`: Ap Attack +0.5
$armored_car_equipment_2$ armored_car3 Sub-technologies: armored_car_at_upgrade	2	1942	$armored_car_equipment_1$	—	Equipment: `armored_car_equipment_2`	—
`Extreme Environment Training` extreme_environment_training	2	1942	Advanced Special Forces Training	Elite Forces	—	`category_special_forces`: Acclimatization Hot Climate Gain Factor +0.2 `category_special_forces`: Acclimatization Cold Climate Gain Factor +0.2 Special Forces No Supply Grace +24 Special Forces Training Time Factor +0.1
`Survival Training` survival_training	2	1942	Expanded Special Forces Program	Elite Forces	—	`category_special_forces`: Acclimatization Hot Climate Gain Factor +0.1 `category_special_forces`: Acclimatization Cold Climate Gain Factor +0.1 Special Forces Out Of Supply Factor -0.1
`Night Vision I` night_vision	2.5	1943	—	Night Vision II	—	Land Night Attack +0.1
`Improved Amphibious Tractors` amphibious_mechanized_infantry_2	2	1943	Amphibious Tractors	—	Equipment: `amphibious_mechanized_equipment_2`	—
`Infantry Anti-Tank II` infantry_at2	1.5	1943	Infantry Anti-Tank I	—	—	`category_all_infantry`: Hard Attack +0.25 `category_all_infantry`: Ap Attack +1 `category_cavalry`: Hard Attack +0.1 `category_cavalry`: Ap Attack +0.4 `fire_support`: Hard Attack +0.15 `fire_support`: Ap Attack +0.5 `mot_fire_support`: Hard Attack +0.15 `mot_fire_support`: Ap Attack +0.5
`Marines III` marines3	2	1943	Marines II	—	—	`marine`: Max Organisation +5
`Paratroopers III` paratroopers3	2	1943	Paratroopers II	—	—	`paratrooper`: Max Organisation +5
`Rangers III` rangers_tech3	1.5	1943	Rangers II	—	—	`ranger_battalion`: Max Organisation +5
`Mountain Infantry III` tech_mountaineers3	2	1943	Mountain Infantry II	—	—	`mountaineers`: Max Organisation +5
`Improved Infantry Equipment III` advanced_infantry_weapons2	1.5	1944	Infantry Equipment III	—	—	`category_light_infantry`: Soft Attack +0.05 `category_cavalry`: Soft Attack +0.05 `category_vehicle_infantry`: Soft Attack +0.1
`Mechanized Equipment III` mechanised_infantry3	3	1944	Mechanized Equipment II	—	Equipment: `mechanized_equipment_3`	`mechanized`: Soft Attack +0.15 `mechanized`: Hard Attack +0.15 `mot_fire_support`: Breakthrough +0.1 `mot_fire_support`: Soft Attack +0.05
`Elite Forces` elite_forces	2	1944	Extreme Environment Training, Survival Training	—	—	`category_special_forces`: Max Organisation +5 `category_special_forces`: Soft Attack +0.05 Special Forces No Supply Grace +24
`Night Vision II` night_vision2	2	1946	Night Vision I	—	—	Land Night Attack +0.15