What is the highest level for an assasin?

[bretwalda]

Try it. You WILL get 5* assassins with fortress and max. assassin building (rookery?) in Syria.

By the way there are quite a few hidden bonuses: like Jannisary Heavy Infantry in Bulgaria. If you look for it you will find them in some faq, unit description or listing.

[lilljonas]

Absolutely correct. Syria is one of the handful of provinces that has a "secret" valour bonus, and in this case it is for assassins.

[mfberg]

The valor bonus listings for provinces just includes the first unit that gets the bonus. Thus Brigand are listed for Bulgaria while they also get JHI, Nizari are listed for Syria and they also get Assassins.

Here is my full listing: It should be correct for MTW:VI, but they may change for the mods.
Berber Camel - Algeria
Turcoman Foot - Anatolia
Turcopole - Antioch
Gungalley - Aragon
Armenian Heavy Cavalry - Armenia
Gothic Foot Knights - Brandenburg
Bulgarian Brigands - Bulgaria
Janissary Heavy Infantry - Bulgaria
Inquisitor - Castile
Grand Inquisitor - Castile
Kataphraktoi - Constantinople
Longboat - Denmark
Ottoman Sipahi - Edessa
Mamluk Cavalry - Egypt
Genoese Sailors - Genoa
Janissary Archers - Georgia
Almohad Urban Militia - Granada
Chivalric Foot Knight - Ile de France
Gallowglass - Ireland
Knights Templar - Jerusalem
Knights Santiago - Leon
Ghulam Cavalry - Lesser Armenia
Woodsmen - Lithuania
Saharan Cavalry - Lybia
Knights Hospitaller - Malta
Billmen - Mercia
Berber Camel - Morocco
Pronoiai Allagion - Nicaea
Vikings - Norway
Caravel - Portugal
Peasants - Provence
Teutonic Knights - Prussia
Hospitaller Foot Knights - Rhodes
Ottoman Infantry - Rum
Ottoman Sipahi - Rum
Gothic Knights - Saxony
Highland Clansmen - Scotland
Mamluk Horse Archer - Sinai
SwissPikemen - Switzerland
Nizari - Syria
Assassin - Syria
Chivalric Knights - Toulouse
Trebizond Archers - Trebizond
Turcoman Horse - Tripoli
Boyars - Tripoli (if you haven't added VI IIRC)
Sipahi of the Porte - Tripoli
Dhow - Tunisia
Urban Militia - Tuscany
Pikemen - Tyrolia
Galley - Venice
Longbows - Wales
Cog - Wessex

mfberg

[bretwalda]

So the hidden bonuses are:

Janissary Heavy Infantry - Bulgaria
Grand Inquisitor - Castile
Ottoman Sipahi - Rum
Assassin - Syria
Boyars - Tripoli (if you haven't added VI IIRC)
Sipahi of the Porte - Tripoli

(The rest can be viewed in-game. Just for the convenience I listed them.)

[metatron]

Boyars?!

[2faced]

Boyars. That's a funny blooper.

Anyways, does this same idea apply to inquisitors and grand inquisitors? Spies and emissaries too (very unlikely I know)?