Unlocked at Military tech 3

Levied Troops: +10% Manpower recovery speed, +10% Vassal Manpower Contribution
Early Standing Military: +15% Army drill gain, -15% Regiment drill loss
Mercenary Army: -10% Mercenary maintenance, -5% Mercenary cost
Local Militias: -5% Infantry cost, -10% Recruitment time, -10% Regiment costs

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Unlocked at Military tech 7

Veteran Officers: -0.5% Yearly army tradition decay, +100% Army tradition from battles
Meritocratic Promotion: -25% General cost, +1 Max generals
Martial Education: +0.25 Yearly army tradition
Religious Leaders: +10% Recover army morale speed, +10% Manpower in true faith provinces

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Unlocked at Military tech 11

Siege Guns: +10% Siege ability
Concentrated Fire: -25% Artillery barrage cost, +1 Artillery levels contribution to siege
Field Artillery: +10% Artillery combat ability, +10% Artillery damage from back row
Expanded Artillery Foundries: -10% Artillery cost, +1 artillery levels available vs fort

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Unlocked at Military tech 15

Bastion Forts: +15% Fort defense
Expanded Fortifications: -20% Fort maintenance cost
Sortie Tactics: +1 Attrition for enemies, +50% Garrison army damage (When using sortie action in sieges)
Fortified Emplacements: -5% Fire damage received, -5% Shock damage received

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Unlocked at Military tech 19

Heavy Cavalry: +10% Cavalry combat ability
Light Cavalry: +25% Cavalry flanking ability, +5% Morale damage
Dragoons: +10% Movement speed
Chevauchée Tactics: +10% Looting speed, +15% Available loot

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Unlocked at Military tech 23

Expanded Supply Trains: +15% National supply limit modifier
Quick Reinforcements: +10% Reinforce speed
Field Foraging: -10% Land attrition
Amphibious Warfare: +25% Disembark speed

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Unlocked at Military tech 27

Heavy Infantry: -7.5% Fire and Shock damage received
Light Infantry: +10% Infantry combat ability
Engineer Corps: -10% Fort maintenance, +10% Siege ability
Medic Corps: +10% Reinforce speed, -10% Reinforce cost

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Unlocked at Military tech 31

Offensive Doctrine: +10% Land fire and shock damage
Defensive Doctrine: +10% Fort defense, -10% Morale damage received
Quality Equipment: +5% Discipline, -7.5% Fire damage received
Grand Army: +10% Land force limit, +10% Land maintenance