Research

This article is considered accurate for the current version of the game.

Researching technologies

Four research slots are shown, with a national focus unlocking a fifth slot. It is unknown whether this is the same for all countries. Each technology has a base time to research, which may be affected by various modifiers:

• Ahead of time: Each year ahead of time imposes a +200% penalty to research time. This appears to be accurate to a sub-year level.
• Research bonus: Completing certain national focuses can give a -50% research bonus to the next technology researched in a given category.
• Research bonus: Completing certain national focuses can give a -100% reduction on the ahead of time penalty for specific equipment.

Research bonuses

Several factors give Research bonuses:

Germany

• German Air Innovations: Battlefield Support Doctrine +10%, Jet Technology Research Speed +10%
• German Rocketry: Rocket Research Speed +10%

(incomplete, split of in separate article to list all Research bonuses? see discussion)

Land

Infantry

Weapons & Equipment

1918	1936	1938	1940	1941	1942	1943	1944	1945	1946
Support Weapons I Infantry Defense +5.0% Infantry Breakthrough +5.0% Motorised Defense +5.0% Motorised Breakthrough +5.0% Mechanised Defense +5.0% Mechanised Breakthrough +5.0% Mountaineers Defense +3.0% Mountaineers Breakthrough +3.0% Paratroopers Defense +3.0% Paratroopers Breakthrough +3.0% Marines Defense +3.0% Marines Breakthrough +3.0% Cavalry Defense +2.0% Cavalry Breakthrough +2.0%		Support Weapons II Infantry Defense +5.0% Infantry Breakthrough +5.0% Motorised Defense +5.0% Motorised Breakthrough +5.0% Mechanised Defense +5.0% Mechanised Breakthrough +5.0% Mountaineers Defense +3.0% Mountaineers Breakthrough +3.0% Paratroopers Defense +3.0% Paratroopers Breakthrough +3.0% Marines Defense +3.0% Marines Breakthrough +3.0% Cavalry Defense +2.0% Cavalry Breakthrough +2.0%		Support Weapons IV	Night Fighting Equipment? I			Night Fighting Equipment? II
Weapons I	Improved Infantry Equipment I Infantry Soft Attack +5.0% Mountaineers Soft Attack +5.0% Paratrooper Soft Attack +5.0% Marines Soft Attack +5.0% Cavalry Soft Attack +5.0% Motorized Soft Attack +5.0% Mechanised Soft Attack +5.0%	Weapons II		Weapons III		Improved Infantry Equipment II
				Anti-Tank? I	Anti-Tank? II

Motorized

1918	1936	1940	1941	1942	1943	1944	1945	1946
	Motorized (Variant: Self-Propelled Rocket Artillery)		Mechanized I		Mechanized II		Mechanized III

Specialists

1918	1936	1940	1941	1942	1943	1944	1945	1946
Marine I			Marine II
Mountain I			Mountain II
	Paratrooper I		Paratrooper II

Support

Field Hospital and Logistic Company requiers Motorised to be researched. Signal Company additionally requires Radio to be researched.

1918	1936	1939	1942	1945
Support Equipment	Engineer I	Engineer II	Engineer III	Engineer IV
	Recon I	Recon II	Recon III	Recon IV
	Military Police I	Military Police II	Military Police III	Military Police IV
	Maintenance I	Maintenance II	Maintenance III	Maintenance IV
	Field Hospital I	Field Hospital II	Field Hospital III	Field Hospital IV
	Logistics Company I	Logistics Company II	Logistics Company III	Logistics Company IV
(Radio)	Signal I	Signal II	Signal III	Signal IV

Armor

Year	Light	Medium	Heavy	Super-Heavy
		Great War
1934	Light I		Heavy I
1936	Light II
1939		Medium I
1941	Light III	Medium II	Heavy II
1943		Medium III	Heavy III	Super-Heavy I
1945		Modern

Each armor type also has three variants: Tank Destroyer, Self-Propelled Artillery, and Self-Propelled Anti-Air.

Artillery

Year	Anti-Air	Anti-Tank	Artillery	Rocket Artillery
1934			Towed Artillery I
1936	AA I Enables Towed Anti-Air	AT I Enables Towed Anti-Tank	Interwar Artillery Artillery, Support Artillery Soft Attack: +10%
1939	(bonus)?	(bonus)?	Artillery II
1940	AA II	AT II	(bonus)?	Rocket Artillery I
1941	(bonus)?	(bonus)?	(bonus)?	(towed Rocket Artillery)?
1942	(bonus)?	(bonus)?	Artillery III	(bonus)?

* Years with (bonus) will give a unknown bonus to the respective Artillery branch. Fields with Roman numerals unlock new equipment.

Land doctrine

Land doctrine trees are mutually exclusive, as are the sub-paths in each tree.

Mobile Warfare doctrine

Mobile warfare is a focus on speed and maneuver to cut off and disorganize enemy forces.

This is the favored doctrine of Germany.

Mobile Warfare All Armor: Breaktrough: +20% Planning speed : +50% Army speed: +10% Org Loss when Moving: -10% Enables Unexpected thrust
Delay All Armor: Breaktrough: +20% Enables Delay
Elastic Defence Army: Organisation: +10 Enables Elastic Defense
Mobile Infantry	Blitzkrieg
?	Amored Spearhead All Armor: Breaktrough: +20% Organization: +15 Enables Blitz
?	Schwerpunkt All Armor: Recovery Rate: +10% Organization: +10
?	Blitzkrieg Motorised Infantry Organisation: +5 Mechanised Infantry Organisation: +5 All Armor: Recovery Rate: +10% Armor Organisation: +10 Enables Breaktrough
Kampfgruppe Army: Recovery Rate: +20% Organization: +10 Planning Speed: +20% Enables Overwhelming Fire
Desperate Defense	Modern Blitzkrieg
Volkssturm The Volkssturm, or People's Militia, consisted of men that were too old, too young or otherwise unfit for regular military service Recruitable Population: 2%	?
Non-Discriminatory Conscription Even invalids and cripples must be drafted, there is no such thing as a civilian Recruitable Population: 3%	?
?	?

Superior Firepower doctrine

This doctrine focuses on throwing shells, not men, at the enemy. Our manpower is precious, bullets are cheap.

This is the favored doctrine of the United States.

Mass Assault Reinforcement Rate: +20%
?
?
Dispersed Support	Integrated Support
?	?
?	?
?
AirLand Battle	Shock & Awe
?	?
?	?
?	?
?	?

Grand Battleplan doctrine

Extensive planning and preparation before engaging in battle is the key to success.

This is the favored doctrine of the United Kingdom and France (Assault branch) and Japan (Infiltration branch).

Grand battle Plan Max Planning: +30%
Trench Warfare A shovel is often the best weapon of the infantry. Units learn the value of entrenching in any position they take up Entrenchment speed: +25% Max Entrenchment: +10
Prepared Defense Army: Defense: +10% Organization: +10
Grand Assault Army: Breakthrough: +10% Soft Attack: +5?%
Assault	Infiltration
?	?
?	?
?	?
?	?
?	?
?	?

Mass Assault doctrine

"Perfect" weapons are overrated, a large number of "good enough" weapons is the path to victory!

This is the favored doctrine of Soviet Russia and China.

Mass Assault Reinforcement Rate: +2%
?
Defense in Depth ?
Deep Battle	Mass Mobilization
?	?
?	Infantry Offensive Infantry Combat Width: -0.4
?	Large Front Offensive All Infantry & Mot/Mech: Organization: +10 All Armor: Organization: +10
?	Human Wave Offensive Infantry Recovery Rate: +0.30 Recruitable Population: 5%
?	?
?
?

Naval

Ships

1922	1936	1940	1944
Destroyer I	Destroyer II	Destroyer III	Destroyer IV
Light Cruiser I	Light Cruiser II	Light Cruiser III	Light Cruiser IV
Heavy Cruiser I	Heavy Cruiser II	Heavy Cruiser III	Heavy Cruiser IV
Battlecruiser I		Battlecruiser II
Battleship I	Battleship II	Battleship III	Battleship IV
	Super-Heavy Battleship I		Super-Heavy Battleship II
Carrier I?	Carrier II?	Carrier III?	Carrier IV?
Submarine I?	Submarine II?	Submarine III?	Submarine IV?
Transport?		Landing Craft	Tank Landing Craft?

Naval doctrine

Naval doctrine trees appear to be mutually exclusive while their branches are not.

Fleet in Being

A strong fleet focused around battleships means that we are a force to be reckoned with when deployed at sea.

This is the favored doctrine of the United Kingdom.

Fleet in Being
Battlefleet Concentration Battleship Search & Destroy: +50.0% Battleship Organisation: +10 Battlecruiser Search & Destroy: +50.0% Battlecruiser Organisation: +10 Heavy Cruiser Search & Destroy: +50.0% Heavy Cruiser Organisation: +10	Trade Interdiction Submarine?	Submarine Operations Submarine Surface Detection: +10.0% Submarine Organisation: +10
Subsidiary Carrier Role Carrier Organisation: +10 Sortie Efficency: +10,0%	Convoy Escorts Destroyer Sub Detection: +20.0% Destroyer Organisation: +10 Escort Efficency: +15,0%	?
Hunter Killer Groups Destroyer Sub Detection: +20.0% Destroyer Organisation: +20 Light Cruiser Sub Detection: +20.0% Light Cruiser Organisation: +10 Escort Efficency: +10,0%	Escort Carriers Escort Efficency: +30,0%	?
?	Integrated Convoy Defense?	?
Floating Airfield
?

Trade Interdiction

Against a stronger naval opponent we can focus on tying up their fleet and destroying supply lines to starve their war machine.

This is the favored doctrine of the German Reich.

Trade Interdiction Submarine Surface Detection: +10.0% Submarine Organisation: +10 Light Cruisers Surface Detection: +10.0% Light Cruisers Organisation: +10 Heavy Cruisers Surface Detection: +10.0% Heavy Cruisers Organisation: +10
Commerce Raiders?	?	Convoy Interdirecton Submarine Surface Detection: +10.0% Submarine Raiding Coordination: +10.0% Submarine Organisation: +10
Capital Ship Raiders?	Convoy Sailing?	?
Fleet Concentration?	?	Wolfpacks?
?	?	?
Floating Airfield		?

Base Strike

With a strong focus on carriers no enemy will be outside our reach. Neither at land or at sea.

This is the favored doctrine of the United States and Imperial Japan.

Base Strike?
Commerce Defense?	Trade Interdiction Submarine?	Carrier Task Force?
?	?	?
Convoy Sailing?	?	Floating Airfield
Aerial Convoy Defense?	?	?
		?
		?

Air

Aircraft

Year	Light			Medium		Heavy
	Support	Fighter	Naval Bomber	Heavy Fighter	Tactical Bomber	Strategic Bomber
1933		Fighter I			Tactical Bomber I
1936	Support I	Fighter II	Naval Bomber I	Heavy Fighter I	Tactical Bomber II	Strategic Bomber I
1940	Support II	Fighter III	Naval Bomber II	Heavy Fighter II	Tactical Bomber III	Strategic Bomber II
1944	Support III	Fighter IV	Naval Bomber III	Heavy Fighter III	Tactical Bomber IV	Strategic Bomber III
Jet Engines
1945		Jet Fighter I			Jet Tactical Bomber I
1948?		Jet Fighter II?			Jet Tactical Bomber II?	Jet Strategic Bomber I?

Light aircraft have navalized variants, which allows them to be based on aircraft carriers.

Air doctrine

Unlike land doctrines, air doctrine tree and branches do not seem to be mutually exclusive, with the exception of night versus day bombing.

Air Superiority

Our fighters are the backbone of the air force and both defend our skies, escort bombers and clear the skies of our enemies for our ground troops.

Air Superiority?
Formation Flying Fighter detection: +10%		Force Rotation Interception detection: +10%
Air Offense Air superiority attack: +10%	?	Air Defense?	?
?	?	?	?
?	?	?	Home Defense?
Fighter Ace Initiative?		Fighter Veteran Initiative?

Battlefield Support

By improving how close air support interacts with divisions we can lay waste to enemy divisions with suboptimal support.

Battlefield Destruction?
Dive Bombing Air Support Mission Efficiency +20,0%
Direct Ground Support?	?
Support Veteran Initiative?	?
Support Ace Initiative?	?

Operational Destruction

Tactical bombers are flexible and can perform both ground support and regular bombing.

Operational Destruction?
Infrastructure Destruction TAC bombing: +100%
Logistical Strike?
Battlefield Interdiction?
Bomber Veteran Initiative?	Carousel Bombardment?
Bomber Ace Initiative?	Keypoint Bombardment?
	?

Strategic Destruction

By bombing the enemy's factories, either by night, or more dangerously, during the day we can seriously hinder their war machine.

Strategic Destruction
Night Bombing?	Day Bombing?
Fighter Sweeps Interception Mission Efficency: +20.0%	Dogfighting Experience Air Superiority Mission Efficency: +20.0%
?	?
?	?

Industry

Engineering

Electronic Engineering

Year
1934		Electronic Mechanical Engineering Research Cost: -2%
	Radio Reinforce Rate: +25%		Mechanical Computing Research Cost: -3%
	Radio Detection Enables Radar Station (Level 1)
1938	Decimetric Radar Enables Radar Station (Level 2)	Basic Encryption Encryption: +1	Computing Machine Research Cost: -3%	Basic Decryption Decryption: +1
	?
1940	?	Encryption? II	?	Decryption? II
	?

Secret

Year	Atomic Research	Experimental Rockets
1940	Atomic Research Enables Nuclear Reactor (Level 1)
1943	Nuclear Reactor?	?
1944		Jet Engine?	?
1945	Nuclear Bomb?	?
1946			?

Industry

Year	Production		Industry		Construction		Synthetic Oil
	Basic Machine Tools: Production Efficiency Cap: +5.0%				?
			Concentrated Industry: Max Factories in State: +20.0% Factory Output: +20.0%	Dispersed Industry: Max Factories in state: +20.0% Factory Output: +10.0% Factory Bomb Vulnerability: -10.0%	Construction I: Construction Speed: +10.0%	Excavation I: Resource Gain Efficency: +10.0%
1937	Improved Machine Tools: Production Efficiency Cap: +10.0%		Concentrated Industry II: Factory Output: +10.0% Building Size Cap: +2?	Dispersed Industry II: Factory Output: +5.0%? Factory Bombing Defense: +20.0%?	Construction II: Construction Speed: +10.0%	Excavation II:
1938	Advanced Machine Tools: Production Efficiency Cap: +15.0%?		Concentrated Industry III: Factory Output: +10.0%	Dispersed Industry III: Factory Output: +5.0%? Factory Bombing Defense: +20.0%	Construction III: Construction Speed: +15.0%?	?
1939	Assembly Line Production: Production Efficiency Cap: +20.0%		Concentrated Industry IV?: Factory Output: +10.0%?	Dispersed Industry IV: Factory Output: +5.0% Factory Bombing Defense: +20.0%	Construction IV: Construction Speed: +20.0%
1940	?	?	Concentrated Industry V?: Factory Output: +10.0%?	Dispersed Industry V?: Factory Output: +5.0%? Factory Bombing Defense: +20.0%?	Construction V?: Construction Speed: +20.0%?	?