步兵科技

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步兵科技科研树解锁了新的步兵装备,机动装备和机械化装备,以及解锁和改进特种部队,并改善了步兵和骑兵的整体战斗力。

步兵科技科研树
Infantry research tree.png

武器和装备

步兵武器

步兵装备代表步兵的标准武器套件,是任何部队的基础。每个国家都可以使用1918年的基本步兵装备,而所有主要国家和非主要国家都已完成1936年武器的研究。共有四种越来越先进的步兵装备。

Icon (generic) Technology Year Base cost Prerequisites Description Statistics
Basic Infantry equipment Basic Infantry equipment 1918 Auto. unlocked Basic infantryman equipment developed before and during the Great War.
2 Steel.png
Basic Infantry equipment
Defense: 20.0 Breakthrough: 2.0
Soft attack: 3.0 Hard attack: 0.5
Max Speed: 4.0 km/h Piercing: 1.0
Reliability: 90.0% Production cost.png Production Cost: 0.43

Unlocks
Infantry.png Infantry
Manpower: 1000 Training time: 90
Recovery Rate: 0.30 Supply use: 0.07
Suppression: 1.5 Organization: 60
HP: 25.0 Weight: 0.5
Infantry Equipment I Infantry Equipment I 1936 127 days Basic Infantry equipment Personal and crew served weapons for infantry as well as the various other bits of kit a soldier needs.
2 Steel.png
Infantry Equipment I
Defense: 22.0 Breakthrough: 3.0
Soft attack: 6.0 Hard attack: 1.0
Max Speed: 4.0 km/h Piercing: 4.0
Reliability: 90.0% Production cost.png Production Cost: 0.5
Improved Infantry Equipment I Improved Infantry Equipment I 1938 127 days Infantry Equipment I Personal and crew served weapons for infantry as well as the various other bits of kit a soldier needs. Improved weapon models and more specialized equipment.
Upgrades
Cavalry.png Motorized.png Mechanized.png
Soft attack: +5%
Infantry.png Marine.png Mountaineers.png Paratroop.png Bicycle Battalion.png
Soft attack: +5%
Infantry Equipment II Infantry Equipment II 1939 170 days Improved Infantry Equipment I Personal and crew served weapons for infantry as well as the various other bits of kit a soldier needs. Modernized to include a great number of sub-machineguns and anti-tank rifles.
3 Steel.png
Infantry Equipment II
Defense: 28.0 Breakthrough: 4.0
Soft attack: 9.0 Hard attack: 1.5
Max Speed: 4.0 km/h Piercing: 5.0
Reliability: 90.0% Production cost.png Production Cost: 0.58
Improved Infantry Equipment II Improved Infantry Equipment II 1940 170 days Infantry Equipment II Personal and crew served weapons for infantry as well as the various other bits of kit a soldier needs. Improved weapon models and more specialized equipment.
Upgrades
Cavalry.png Motorized.png Mechanized.png
Soft attack: +5%
Infantry.png Marine.png Mountaineers.png Paratroop.png Bicycle Battalion.png
Soft attack: +5%
Infantry Anti-Tank I Infantry Anti-Tank I 1942 127 days Infantry Equipment II Arming our infantry with anti-tank rifles will allow them to take out lighter armored vehicles while maintaining mobility.
Upgrades
Infantry.png Marine.png Mountaineers.png Paratroop.png Motorized.png Mechanized.png Bicycle Battalion.png
Hard attack: +25%
Piercing +100%
Infantry Anti-Tank II Infantry Anti-Tank II 1943 127 days Infantry Anti-Tank I For infantry to effectively engage heavier armored units, high-explosive anti-tank weapons need to be made smaller and lighter.
Upgrades
Infantry.png Marine.png Mountaineers.png Paratroop.png Motorized.png Mechanized.png Bicycle Battalion.png
Hard attack: +25%
Piercing +100%
Infantry Equipment III Infantry Equipment III 1942 170 days Improved Infantry Equipment II Personal and crew served weapons for infantry as well as the various other bits of kit a soldier needs. Further modernized to include personal Assault Rifles and anti-tank rockets.
4 Steel.png
Infantry Equipment III
Defense: 34.0 Breakthrough: 5.0
Soft attack: 12.0 Hard attack: 2.0
Max Speed: 4.0 km/h Piercing: 10.0
Reliability: 80.0% Production cost.png Production Cost: 0.69
Improved Infantry Equipment III Improved Infantry
Equipment III
1944 127 days Infantry Equipment III Personal and crew served weapons for infantry as well as the various other bits of kit a soldier needs. Further Modernized to include personal Assault Rifles and anti-tank rockets. Improved availability of weapons previously distributed to a limited extent.
Upgrades
Cavalry.png Motorized.png Mechanized.png
Soft attack: +10%
Infantry.png Marine.png Mountaineers.png Paratroop.png Bicycle Battalion.png
Soft attack: +5%

Support weapons

Support weapons includes crew-served weapons such as medium and heavy machine guns and mortars. These technologies provide bonuses to the defense and breakthrough of cavalry and all types of infantry.

Icon (generic) Technology Year Base cost Prerequisites Description Statistics
Support Weapons I Support Weapons I 1918 127 days Automatic weapons are becoming more portable. Submachine guns have already proven effective and the development of hand-held support weapons must continue.
Upgrades
Infantry.png Motorized.png Mechanized.png
Defense: +5%
Breakthrough: +5%
Cavalry.png
Defense: +2%
Breakthrough: +2%
Mountaineers.png Paratroop.png Marine.png
Defense: +3%
Breakthrough: +3%
Support Weapons II Support Weapons II 1938 127 days Support Weapons I The development of automatic weapons which combine the aspects of light and heavy machine guns allows versatility in how our infantry employ their equipment.
Upgrades
Infantry.png Motorized.png Mechanized.png
Defense: +5%
Breakthrough: +5%
Cavalry.png
Defense: +2%
Breakthrough: +2%
Mountaineers.png Paratroop.png Marine.png
Defense: +3%
Breakthrough: +3%
Support Weapons III Support Weapons III 1940 127 days Support Weapons II While maintaining and improving reliability of machine guns, we can also experiment with higher firing rates to ensure lethality of the constant stream of bullets.
Upgrades
Infantry.png Motorized.png Mechanized.png
Defense: +5%
Breakthrough: +5%
Cavalry.png
Defense: +2%
Breakthrough: +2%
Mountaineers.png Paratroop.png Marine.png
Defense: +3%
Breakthrough: +3%
Support Weapons IV Support Weapons IV 1942 127 days Support Weapons III With the increased use of assault rifles, developing automatic weapons that can be used in any environment by all soldiers is a priority for a modern army.
Upgrades
Infantry.png Motorized.png Mechanized.png
Defense: +5%
Breakthrough: +5%
Cavalry.png
Defense: +2%
Breakthrough: +2%
Mountaineers.png Paratroop.png Marine.png
Defense: +3%
Breakthrough: +3%

Night vision

Night vision equipment allows soldiers to see even in the dark, offsetting some of the -50% penalty that units receive when fighting at night and giving an edge over enemies who do not have such equipment.

Icon (generic) Technology Year Base cost Prerequisites Description Statistics
Night Vision I Night Vision I 1943 212 days Being able to see the enemy without being seen is key to night operations. With the invention of infra-red technology, we can outfit our army with devices which, though unwieldy, make this possible.
Global stats
Land Night Attack: +10%
Night Vision II Night Vision II 1946 170 days Early infra-red scopes, although initially intended for use by snipers, had a limited vision range. As both the portability and vision improves, these devices can be used by more troops operating at night.
Global stats
Land Night Attack: +15%

Motorized

Motorized infantry is a somewhat harder and much faster version of infantry, but is more expensive and less reliable. It represents infantry outfitted with "soft-skinned—unarmored or lightly armored—vehicles (Jeeps, trucks, etc.). It provides infantry with more strategic (deploying to the area of operations, though state infrastructure is the primary strategic mover) and operational (moving along the front line) mobility and is suitable to accompany armored forces.

Motorized technology enables research of Mechanized Infantry that uses increasingly advanced armored personnel carriers and infantry fighting vehicles (e.g., armored cars and half-tracks). These are much more expensive than Motorized, and initially slower, but provide higher attack, armor and hardness, with much greater tactical mobility (moving under fire, i.e., the "breakthrough" stat). Mechanized Infantry should be upgraded to keep pace with the faster advanced tanks. Mechanized Infantry lacking tanks is better as a defensive fire brigade than an assault force (except against relatively weak opposition that it can outpace and overrun). As a general rule, mechanized infantry are best used with armored forces, just as they were in reality.

Icon (generic) Technology Year Base cost Prerequisites Description Statistics
Motorized Motorized 1936 170 days Motorizing infantry is the first stage to mechanizing an army. Civilian trucks are readily adapted to military uses of transporting soldiers, towing guns, and carrying equipment and supplies. This greatly increases the strategic mobility of infantry units, which would otherwise rely on marching.
1 Rubber.png 1 Steel.png
Motorized
Hardness: 10.0% Max Speed: 12.0 km/h
Reliability: 80.0% Fuel Usage: 1.2
Production cost.png Production Cost: 2.50

Unlocks
Motorized.png Motorized Infantry
Manpower: 1200 Training time: 90
Recovery Rate: 0.30 Supply use: 0.11
Suppression: 2.2 Organization: 60
HP: 25.0 Weight: 0.7
Motorized Rocket Artillery Motorized Rocket Artillery 1939 127 days Motorized Multiple rocket launchers such as these deliver explosives to a target area more quickly than conventional artillery, but with lower accuracy and requiring a longer time to reload. Being mounted on trucks, this version is able to launch attacks and change positions before the enemy can return fire.
1 Rubber.png 1 Steel.png
Motorized Rocket Artillery
Defense: 15.0 Breakthrough: 12.0
Soft Attack: 36.0 Hard Attack: 1.0
Piercing: 2.0 Reliability: 80.0%
Fuel Usage: 0.1 Production cost.png Production Cost: 12.0

Unlocks
Motorized rocket brigade.png Motorized Rocket Artillery
Manpower: 500 Training time: 120
Recovery Rate: 0.10 Supply use: 0.28
HP: 0.6 Weight: 0.5
Mechanized Equipment I Mechanized Equipment I 1940 170 days Motorized Mechanized infantry is infantry equipped with armored personnel carriers (APCs) or infantry fighting vehicles (IFVs) for transport and combat. Mechanized infantry is distinguished from motorized infantry in that its vehicles provide a degree of protection from hostile fire, as opposed to soft-skinned wheeled vehicles (trucks or jeeps) for motorized infantry.
2 Steel.png 1 Rubber.png
Mechanized Equipment I
Defense: 26.0 Breakthrough: 4.0
Hardness: 60.0% Max Speed: 8.0 km/h
Armor: 10.0 Piercing: 11.0
Reliability: 80.0% Fuel Usage: 2.4
Production cost.png Production Cost: 8.00

Upgrades
Motorized.png Motorized artillery.png Motorized anti-tank.png Motorized anti-air.png Motorized rocket artillery.png
Hardness: +100%
Mechanized Equipment II Mechanized Equipment II 1942 170 days Mechanized Equipment I Mechanized infantry is infantry equipped with armored personnel carriers (APCs) or infantry fighting vehicles (IFVs) for transport and combat. Mechanized infantry is distinguished from motorized infantry in that its vehicles provide a degree of protection from hostile fire, as opposed to soft-skinned wheeled vehicles (trucks or jeeps) for motorized infantry.
3 Steel.png 1 Rubber.png
Mechanized Equipment II
Defense: 30.0 Breakthrough: 5.0
Hardness: 70.0% Max Speed: 10.0 km/h
Armor: 15.0 Piercing: 16.0
Reliability: 80.0% Fuel Usage: 2.4
Production cost.png Production Cost: 10.00
Mechanized Equipment III Mechanized Equipment III 1944 255 days Mechanized Equipment II Mechanized infantry is infantry equipped with armored personnel carriers (APCs) or infantry fighting vehicles (IFVs) for transport and combat. Mechanized infantry is distinguished from motorized infantry in that its vehicles provide a degree of protection from hostile fire, as opposed to soft-skinned wheeled vehicles (trucks or jeeps) for motorized infantry.
4 Steel.png 1 Rubber.png
Mechanized Equipment III
Defense: 34.0 Breakthrough: 6.0
Hardness: 80.0% Max Speed: 12.0 km/h
Armor: 20.0 Piercing: 21.0
Reliability: 80.0% Fuel Usage: 2.4
Production cost.png Production Cost: 12.00

Upgrades
Mechanized.png
Soft Attack: +15%
Hard Attack: +15%
Basic Amphibious Tractor Basic Amphibious Tractor
1941 170 days Mechanized Equipment I Amphibious Tractors, or Amtracs, allow Marines to be landed on a beach under armored protection. However, this comes at the cost of poor fuel efficiency.
2 Steel.png 1 Rubber.png
Basic Amphibious Tractor
Defense: 26.0 Breakthrough: 4.0
Hardness: 60.0% Max Speed: 7.0 km/h
Armor: 10.0 Piercing: 11.0
Reliability: 80.0% Fuel Usage: 4.0
Production cost.png Production Cost: 8.00

Unlocks
Amtrac.png Amtrac Batallion
Manpower: 1200 Training time: 120
Recovery Rate: 0.30 Soft Attack: 0.1
Hard Attack: 0.5 Supply use: 0.18
Suppression: 1.0 Organization: 60
HP: 30.0 Weight: 1.0
Improved Amphibious Tractor Improved Amphibious Tractor
1943 170 days Basic Amphibious Tractor These Amtracs feature several improvements over the base version, such as rear loading ramp for easier unloading on the beach.
3 Steel.png 1 Rubber.png
Improved Amphibious Tractor
Defense: 30.0 Breakthrough: 5.0
Hardness: 70.0% Max Speed: 10.0 km/h
Armor: 15.0 Piercing: 16.0
Reliability: 80.0% Fuel Usage: 4.0
Production cost.png Production Cost: 10.00
Interwar Armored Car Interwar Armored Car
1936 170 days Motorized Where previous armored cars were simply commercial models with thin steel plating, this model was designed from the ground up to carry armor and light armament.
2 Steel.png
Interwar Armored Car
Defense: 2.0 Breakthrough: 12.0
Hardness: 65.0% Soft Attack: 6.0
Hard Attack: 2.0 Max Speed: 9.0 km/h
Armor: 3.0 Piercing: 6.0
Reliability: 80.0% Fuel Usage: 0.8
Production cost.png Production Cost: 4.00

Unlocks
Armored Car.png Armored Car
Manpower: 500 Training time: 180
Recovery Rate: 0.30 Supply use: 0.14
Suppression: 2.5 Organization: 10
HP: 2.0 Weight: 0.8
Basic Armored Car Basic Armored Car
1940 170 days Interwar Armored Car An improved internal layout and additional ammunition storage creates a more effective armored car.
2 Steel.png
Basic Armored Car
Defense: 3.0 Breakthrough: 16.0
Hardness: 65.0% Soft Attack: 13.0
Hard Attack: 4.0 Max Speed: 12.0 km/h
Armor: 10.0 Piercing: 8.0
Reliability: 80.0% Fuel Usage: 1.8
Production cost.png Production Cost: 6.00
Improved Armored Car Improved Armored Car
1942 170 days Basic Armored Car Changes on the battlefield require a much heavier armament and thicker armor to defeat enemy light untis and survive to report back.
2 Steel.png 1 Tungsten.png
Improved Armored Car
Defense: 5.0 Breakthrough: 28.0
Hardness: 70.0% Soft Attack: 16.0
Hard Attack: 8.0 Max Speed: 15.0 km/h
Armor: 20.0 Piercing: 36.0
Reliability: 80.0% Fuel Usage: 1.8
Production cost.png Production Cost: 8.00
Anti-Tank Armored Car Anti-Tank Armored Car
1942 85 days Improved Armored Car Our light mechanized units will come into contact with enemy tank forces at some point. Developing a special anti-tank variant would give them a fighting chance.
2 Steel.png 1 Tungsten.png
Anti-Tank Armored Car
Defense: 6.0 Breakthrough: 28.0
Hardness: 70.0% Soft Attack: 12.0
Hard Attack: 14.0 Reconnaissance: 1.0
Max Speed: 16.0 km/h Armor: 20.0
Piercing: 62.0 Reliability: 80.0%
Fuel Usage: 1.8 Production cost.png Production Cost: 9.00

Special forces

In addition to regular, motorized, and mechanized infantry, there are three specialized infantry types (Marines, Mountaineers, and Paratroopers) that are useful in specific situations. They require standard infantry equipment.

These three types of specialized infantry types are known as Special Forces or SF (not to be confused with the army doctrine Superior Firepower). Special Forces have a Battalion cap for each country. This cap is the greater of either 24 battalions or 5% of your total battalions (excluding SF battalions) making up the rest of your divisions. Divisions cannot be changed, trained, given a different template or have their template adjusted if that would result in exceeding the SF cap. To increase the 24 SF battalion cap, you would have to exceed the 480 non-SF battalion breakeven point by 20 for each additional SF battalion. For example, you would need 500 non-SF battalions for 25 SF battalions, 520 non-SF battalions for 26 SF battalions, 540 non-SF battalions for 27 SF battalions, etc.

Marines

Marines are specialized infantry trained to engage in wet terrain and perform amphibious invasions. They receive +30.0% attack in marshes, +40.0% attack when fighting over rivers, and +50.0% attack when engaging enemies during amphibious landings. Marine Divisions are very effective when supported by Engineer Companies.

Icon (generic) Technology Year Base cost Prerequisites Description Statistics
Marines I Marines I 1936 170 days Troops specializing in amphibious warfare are growing ever more indispensable. Improvised methods and equipment become things of the past as our naval infantry is supported by specialized landing craft and training.
Unlocks
Marine.png Marines
Manpower: 1000 Training time: 120
Recovery Rate: 0.40 Breakthrough: 0.3
Supply use: 0.06 Suppression: 1.0
Organization: 70 HP: 20.0
Weight: 0.5
Marines II Marines II 1939 127 days Marines I Amphibious warfare requires constant innovation. Improved logistical support and portable harbors can enable our marines to perform landings that may otherwise have been impossible.
Upgrades
Marine.png
Soft attack: +5%
Organization: +5
Marines III Marines III 1943 170 days Marines II Marines can be more than just amphibious infantry. In the future, our marine corps will be among the most disciplined and organized special forces.
Upgrades
Marine.png
Organization: +5

Mountain Infantry

Mountaineers are specialized infantry that excel in maneuvering through and engaging in rough terrain. They receive +10.0% movement, +20.0% attack, and +5.0% defense in hills and +20.0% movement, 35.0% attack, and 10.0% defense in mountains.

Icon (generic) Technology Year Base cost Prerequisites Description Statistics
Mountain infantry I Mountain Infantry I 1936 170 days Combat in mountain ranges exposes troops to many perils, but sometimes cannot be avoided. We can minimize these risks by providing our soldiers with specialized training for this environment.
Unlocks
Mountaineers.png Mountaineers
Manpower: 1000 Training time: 120
Recovery Rate: 0.40 Breakthrough: 0.3
Supply use: 0.07 Suppression: 1.0
Organization: 70 HP: 20.0
Weight: 0.5
Mountain Infantry II Mountain Infantry II 1939 127 days Mountain Infantry I Going beyond survival, our forces can be trained to use mountains to their advantage. With light equipment and mule transports, they can maneuver in this terrain better than other infantry.
Upgrades
Mountaineers.png
Soft attack: +5%
Organization: +5
Mountain Infantry III Mountain Infantry III 1943 170 days Mountain Infantry II Preparing for the most arduous mountain missions in high altitudes and low temperatures will require extraordinary training and discipline from our mountain troops.
Upgrades
Mountaineers.png
Organization: +5

Paratroopers

While they take longer to train and only have slightly better stats than normal Infantry, Paratroopers are the only type of unit that can be paradropped into the field, which they do via transport plane. This allows them to perform operations behind enemy lines and in locations where other units cannot easily reach. The AI will use paratroopers in battle, but never uses them for paradrops.

Icon (generic) Technology Year Base cost Prerequisites Description Statistics
Paratroopers I Paratroopers I 1936 170 days By incorporating airborne forces into our army, we can make forced entries and position key troops in previously inaccessible areas, allowing for new tactical opportunities.
Unlocks
Paratroop.png Paratroopers
Manpower: 1000 Training time: 150
Recovery Rate: 0.40 Supply use: 0.06
Suppression: 1.0 Organization: 70
HP: 22.0 Weight: 0.5
Paratroopers II Paratroopers II 1939 127 days Paratroopers I Transitioning from small operations with only a few paratroopers to larger airborne divisions paves way for massive airborne landings, taking these forces beyond a novelty to a natural part of warfare.
Upgrades
Paratroop.png
Soft attack: +5%
Organization: +5
Paratroopers III Paratroopers III 1943 170 days Paratroops II Learning to adapt paradrop operations according to weather, standardizing equipment such as jump boots and extended specialized training will minimize the confusion and risks involved in these dangerous missions.
Upgrades
Paratroop.png
Organization: +5

Special Forces Concentration

Special forces (marines, mountaineers, paratroopers) are trained and equipped for conditions that ordinary soldiers aren’t expected to excel in. The first tech will give them a boost to acclimatization speed. Afterwards, the tree splits. One option is to train your special forces harder, to improve their skills and their ability to fight for longer before having to be resupplied. The other option is to expand the special forces training programs to accept more recruits. Your special forces will be more numerous, but come with more drag and not quite as high speed. In the end though, they will still be elite forces and will be able to develop training to make them even more skilled in fighting in the harshest of conditions. Note: The maximum quantity of special forces is capped at 24 battalions or 5% of your fielded regular battalions (this limit can be increased by unlocking the Expanded Special Forces Program technology).

Special Forces research tree
Special Forces screen.png
Icon (generic) Technology Year Base cost Prerequisites Description Statistics
Special Forces Special Forces 1938 170 days Unconventional fighting requires specialist training. We need to ensure that our troops are prepared and able to adapt to harsh conditions.
Upgrades
Marines Mountaineers Paratroopers
Hot Acclimatization gain factor: +5% Cold Acclimatization gain factor: +5%
Advanced Special Forces Training Advanced Special Forces Training 1940 170 days Special Forces With extensive training, we can ensure that our special forces will be able to perform above and beyond that of normal men. Mutually exclusive with Expanded Special Forces Program.
Upgrades
Marines Mountaineers Paratroopers
Division Training Time: +10%
Defense: +5%
Organization: +5
Extreme Environment Training Extreme Environment Training 1942 170 days Advanced Special Forces Training We need to be able to fight in the harshest of environments. With the right training and equipment, our troops will be able to fight in the most extreme conditions.
Upgrades
Marines Mountaineers Paratroopers
Division Training Time: +10% Supply Grace: +48 hr
Hot Acclimatization gain factor: +50% Cold Acclimatization gain factor: +50%
Expanded Special Forces Program Expanded Special Forces Program 1940 170 days Special Forces Special forces are able to perform missions that ordinary soldiers can not. We need to expand the training program to get more of our soldiers qualified. Mutually exclusive with Advanced Special Forces Training.
Upgrades
Marines Mountaineers Paratroopers
Capacity Multiplier: +5% Division Training Time: -10%
Survival Training Survival Training 1942 170 days Expanded Special Forces Program Our special forces will often fight behind enemy lines and in short supply. We need to train them to endure harsh weather and fight with limited supplies.
Upgrades
Marines Mountaineers Paratroopers
Hot Acclimatization gain factor: +20% Cold Acclimatization gain factor: +20%
Out of Supply: -10%
Elite Forces Elite Forces 1944 170 days Survival Training Only the best of the best will become special forces. The soldiers that make it through the training will be stronger. faster, and fight harder than anyone else.
Upgrades
Marines Mountaineers Paratroopers
Hot Acclimatization gain factor: +20% Cold Acclimatization gain factor: +20%
Supply Grace: +48 hr
Soft Attack: +5% Organization: +5



hoi4fr:Technologie d'infanterie