Military tradition

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Army Tradition and Navy Tradition (collectively Military tradition) are long term, floating measures of the pool of experience of a nation's military forces on land and sea. They give bonuses depending on their strength, are gained through actions of the appropriate forces and decay over time if not increased. Army tradition provides higher morale and quicker manpower recovery, and naval tradition provides higher morale and better trade steering. High tradition significantly improves the skill of recruited military leaders.

Army tradition.pngArmy tradition[edit]

Also shown as Army Tradition.png in the end of combat screen.

100 army tradition gives 100% of the following bonuses:[1]

Recover army morale speed.png +10% Recover army morale speed
Morale of armies.png +25% Morale of armies
Manpower recovery speed.png +10% Manpower recovery speed
Siege ability.png +5% Siege ability
Commanderies faction influence +0.10 Commanderies faction influence
Aristocrats influence +0.10 The aristocrats influence
Girondist influence +0.10 Girondists influence
Militarization of state.png +0.10 Militarization of state

Gaining army tradition[edit]

  • Battles are the primary source of army tradition for small and medium-sized nations. You can view how much you gained in any particular battle on the battle result screen. The exact formula for tradition gain is not currently known, but the relevant factors are:
    • Casualties inflicted on the enemy. The more kills, the more tradition.
    • Stack wipe bonus. The complete destruction of enemy stacks grants more tradition than simply inflicting the same number of casualties.
    • Relative strength of nations. This unknown factor determines the conversion ratio between casualties inflicted and tradition gained. It may depend on any or all of the following factors: national base tax, force limit, army size, unit types, unit quality, total manpower, current manpower, etc. If there are multiple nations on the same side of battle, their conversion factors appear to be averaged. Large nations can therefore gain considerably more army tradition from battles by fighting with smaller allies.
The number of troops that you send into battle, the losses that you suffer, and the quality of your leader have no observable effect on your army tradition gain.
Certain ideas increase the amount of military tradition gained from battles:
Army tradition from battles Traditions Ideas Bonuses Policies
+50%
  • Dhundhari idea 5: Battles in Foreign Lands
  • Mapuche idea 3: Mapuche Tactics
  • Miao idea 7: Legacy of the Miao Rebellions
  • Thomondian idea 6: Thomond's Army Reform
  • Fulani ambition
  • Each successful siege grants +1 army tradition. This is the primary source of army tradition for larger nations.
  • Active forts give a maximum +1 army tradition yearly. Maximum gain occurs when you have 1 actively maintained current technology fort per 50 development across your nation. Forts are generally much too expensive for this to be practical, though.
  • Some events can affect tradition.
  • Several ideas contribute to tradition:
Army tradition.png Traditions Ideas Bonuses Policies
+1.00 yearly
  • Defensive idea 1: Battlefield Commissions
  • Quality idea 2: Quality Education
  • Cypriot idea 2: Frankish Crusaders
+0.50 yearly
  • Afghan traditions
  • Bahmani traditions
  • Karamanid traditions
  • Prussian traditions
  • Songhai traditions
  • Armenian idea 6: Nakharar Titles
  • Baluch idea 7: Baluchi Leadership
  • Beloozero idea 5: Officers of Beloozero
  • Bengal Sultanate idea 2: Promote Habshi Generals
  • Burmese idea 4: Chakravartin
  • Caucasian idea 6: Eastern Influence
  • Cossack idea 5: Military Society
  • Delhian idea 1: Afghan Nobility
  • Khorasani idea 2: Rein in the Turko-Mongol Emirs
  • Knights Hospitaller idea 7: Crusader Tradition
  • K'iche idea 2: Ilo'kab traditions
  • Leonese idea 1: Heritage of the Reconquista
  • Muiscan idea 3: Gueches Wrestling
  • Muscovite idea 2: Legacy of Dmitriy Donskoi
  • Nagpuri idea 4: Invite Maratha Warriors
  • Najdi idea 1: Bedouin Poets
  • Naxian idea 4: Legacy Of Crusaders
  • Nepali idea 4: Rajput Refugees
  • Ogasawara idea 5: Ogasawara-ryu
  • Satake idea 1: Hitachi Genji
  • Sistani idea 4: Loyal Service
  • Takeda idea 7: Koyo Gunkan
  • Telugu idea 2: Telugu Warrior Aristocrats
  • Uesugi idea 2: Yamanouchi and Ogigayatsu Branches
  • Yaroslavlyian idea 5: Cult of Generals
  • Anatolian ambition
  • Ashikaga ambition
  • Daimyo ambition
+0.25 yearly
  • Russian idea 6: The Table of Ranks

Investing in a national Township, limited to 1 per trade company charter area, gives +0.10 yearly army tradition per Township.

Army tradition decay.pngLosing army tradition[edit]

The base tradition decays at 5% of the current tradition annually. (This is not a flat –5; thus 20 tradition decays by 5% and will reduce 1 to 19.)

Ideas and policies that reduce yearly army tradition decay are:

Army tradition decay.png Traditions Ideas Bonuses Policies
−1% yearly
  • Couronian traditions
  • Shimazu traditions
  • Traditions of Theodoro
  • Uesugi traditions
  • Utsunomiya traditions
  • Aristocratic idea 5: Noble Officers
  • Amago idea 1: Omi-Genji
  • East Frisian idea 2: The Saxon Feud
  • Mewari idea 1: Rajput Heartland
  • Prussian idea 4: Noble Cadets
  • Shoni idea 6: Hagakure
  • Tapuian idea 4: Land of Mythology
  • Tupi idea 6: Head Hunters
  • Albanian ambition
  • Québécois ambition
  • Espionage-Quality: The Deserter Act

Note: Battles lost will not reduce tradition. It is gained regardless of victory or defeat.

Navy tradition.pngNavy tradition[edit]

Also shown as Navy Tradition.png in the end of combat screen.

100 navy tradition gives 100% of the following bonuses:[2]

Recover navy morale speed.png +10% Recover navy morale speed
Morale of navies.png +25% Morale of navies
Trade steering.png +100% Trade steering
Privateer efficiency.png +25% Privateer efficiency
Blockade efficiency.png +100% Blockade efficiency
Trade faction influence +0.10 Trade faction influence
Traders influence +0.10 The traders influence
Sailor recovery speed.png +20% Sailor recovery speed

Gaining navy tradition[edit]

  • Battles are the primary source of navy tradition. You can view how much you gained in any particular battle on the battle result screen. The amount of tradition gained in battle is directly proportional to the casualties inflicted on the enemy, as well as the relative strength of the nations involved. Small weak nations will gain considerably more tradition when fighting large strong nations. The number of ships that you send into battle, the losses that you suffer, and the quality of your leader have no observable effect on your naval tradition gain.
Some ideas increase the navy tradition gain from battles:
Naval tradition from battles Traditions Ideas Bonuses Policies
+50%
  • Naval idea 4: Naval Glory
  • Malayan sultanate ambition
  • Some events can affect tradition.
  • Light ships that are protecting trade or privateering grant +2 naval tradition per year for every 100% of your naval force limits utilized in this manner. The formula is
\text{yearly tradition gain} = \frac{2 \cdot \text{number of light ships protecting trade or privateering}}{\text{naval force limit}}
  • Ships blockading ports grant naval tradition.
  • Each terra incognita sea zone revealed through naval exploration grants +1 naval tradition.
  • Several national ideas contribute to tradition:
Navy tradition.png Traditions Ideas Bonuses Policies
+1.00 yearly
  • Breton traditions
  • Cham traditions
  • Galician traditions
  • Hadramhi traditions
  • Kono traditions
  • Luzon traditions
  • Mahri traditions
  • Mogadishan traditions
  • Mori traditions
  • Maritime idea 1: Seahawks
  • Al-Haasa idea 7: Legacy of Ramah ibn Jabir
  • Berber idea 4: Corsairs
  • Canadian idea 4: The Maritimes
  • Catalan idea 1: Consulate of the Sea
  • Cebu idea 3: Protect against the Magalos
  • Danish idea 2: Old Naval Traditions
  • Greek idea 2: Maritime Heritage
  • Khmer idea 3: Cham Migration
  • Malabari idea 6: Mapilla Sailors
  • Montenegrin idea 5: The Call Of The Sea
  • Munster idea 6: Pirate Haven
  • Novgorod idea 6: Funding the Ushkuiniks
  • Siddi idea 2: Siddi Seamanship
  • British ambition
  • East Frisian ambition
  • Administrative-Maritime: The Naval School Act
+0.50 yearly
  • Malian idea 5: Lost Fleet of Abubakari II
  • Ragusan idea 1: Ordo Marinaritiae
+0.25 yearly
  • English idea 1: A Royal Navy

Navy tradition decay.pngLosing navy tradition[edit]

The base tradition decays are 5% of the current tradition annually. (This means –5% of the current tradition, not a flat –5; so if you have 20 tradition then decay will reduce it by -1 annually.)

Ideas and policies that reduce yearly navy tradition decay are:

Navy tradition decay.png Traditions Ideas Bonuses Policies
−1% yearly
  • Mindanao traditions
  • Aristocratic idea 5: Noble Officers
  • Luzon idea 5: Luzon Sailors
  • Mahri idea 6: Book of Navigation
  • Sulawesi idea 2: The Bajau
  • Utsunomiya idea 4: Cadet Branches in Western Japan
  • Candarid ambition
  • Aristocratic-Maritime: Noble Naval Traditions

Note: Battles lost will not reduce tradition. It is gained regardless of victory or defeat.

General.pngMilitary leaders[edit]

Main article: Military leader#Formulas for point distribution

Tradition also improves the skill of military leaders. 100 Army tradition.pngarmy tradition gives, on average:

  • +3.6 to Land leader fire.pngfire, Land leader shock.pngshock, and Land leader maneuver.pngmaneuver
  • +1.2 to Leader siege.pngsiege

skill of a General.pnggeneral.

Footnotes[edit]

  1. See in /Europa Universalis IV/common/static_modifiers/00_static_modifiers.txt (Static modifiers#Army tradition).
  2. See in /Europa Universalis IV/common/static_modifiers/00_static_modifiers.txt (Static modifiers#Navy tradition).
Warfare
Land warfare ArmyLand unitsDisciplineManpower
Naval warfare NavyNaval unitsSailors
Other concepts Casus belliWar exhaustionMilitary traditionLeadersAlliance