Theory technology

One-Time Techs

None

Scaled Techs

Maximum level of 10

Name	Prerequisite	Difficulty	Research Bonus	Start Year	First Offset	Additional Offset	Knowledge on Completion	Effects
Aeronautic Engineering Research		1	None	1918	1936	2	Aeronautical Engineering	Aeronautical Engineering Decay -10%
Artillery Research		1	None	1918	1936	2	Artillery Theory	Artillery Theory Decay -10%
Automotive Research		1	None	1918	1936	2	Automotive Theory	Automotive Theory Decay -10%
Chemical Engineering Research		1	None	1918	1936	2	Chemical Engineering	Chemical Engineering Decay -10%
Electronic Engineering Research		1	None	1918	1936	2	Electronic Engineering Theory	Electronic Engineering Theory Decay -10%
Infantry Warfare Research		1	None	1918	1936	2	Infantry Theory	Infantry Theory Decay -10%
Jet Engine Research		1	None	1918	1936	2	Jet Engine Theory	Jet Engine Theory Decay -10%
Mechanical Engineering Research		1	None	1918	1936	2	Mechanical Engineering	Mechanical Engineering Decay -10%
Militia Warfare Research		1	None	1918	1936	2	Militia Theory	Militia Theory Decay -10%
Mobile Warfare Research		1	None	1918	1936	2	Mobile Unit Theory	Mobile Unit Theory Decay -10%
Naval Engineering Research	At least 1 Naval Base	1	None	1918	1936	2	Naval Engineering	Naval Engineering Decay -10%
Nuclear Physics Research		1	None	1918	1936	2	Nuclear Physics	Nuclear Physics Decay -10%
Rocket Science Research		1	None	1918	1936	2	Rocket Science	Rocket Science Decay -10%
Submarine Engineering Research	At least 1 Naval Base	1	None	1918	1936	2	Submarine Engineering	Submarine Engineering Decay -10%

Note, while appearing on the Theory tab, Supply Transportation, Supply Organisation, and Civil Defence are located in the data file for Industry technology.