Correlations between experience and Promotion

[MosheLevi]

How much experience do units need to gain in order to gain a promotion?
Is there a formula for that?

How much experience do units gain from the battlefield?
I have units who get promotion on the battlefield and some who don’t so I am wondering how that works.

Is there a limit for the amount of experience/promotions that units can get?

 

[Joshua368]

I don't have many exact numbers but I'm sure there's a great exact guide out there that someone will link you to.

You need 2 XP for your first promotion, 5 XP for your second promotion, and 10 XP for your third. It total needed gets increasingly higher and the gap between promotions gets larger as you go on. Of course the Charismatic trait means -25% less XP needed for promotions. (2 XP for first, 4 XP for second, 8 XP for third, etc)

As for how much XP you get per battle, it depends on your odds. Winning a battle with >99.9% odds will only give you 1 XP, while winning at 50% odds will give you much more. The leadership great general promotion doubles this...

You can only earn up to 5 XP from animals (further battles don't count) and up to 10 XP from barbarians. If you upgrade a non-great general unit, its XP resets back to 10 if it was higher.

 

[PieceOfMind]

If you call the first promotion level 1, then in general, for level n you need n^2 + 1 xp for the nth promotion.

ie.
2,5,10,17,26,37...


For charismatic leaders, who need 25% less xp for each promotion,

Just multiply the above numbers by 3/4 and round up.

so

2,4,8,13,20,28, ...

From a single battle there is a maximum of 10xp as I understand. However the odds for a battle which would yield this many xp are so incredibly low it would be impossible for me to test. Even earning 4xp is usually very very difficult.

You always get at least 1xp if you kill the other unit. The defender gets no xp if the attacker withdraws, and in that case the attacker always takes 1xp.

Here is the article that describes how much xp you earn from battle. It is still correct in BtS.

When figuring how much xp you will earn from a victory, the defense modifiers and situational modifers (eg. promotions and defensive terrain) are taken into account, as well as the unit health.

 

[MosheLevi]

If you upgrade a non-great general unit, its XP resets back to 10 if it was higher.

Can you please elaborate on that?

Are you referring to units that are not attached to a great general?

Upgraded unit will keep all its promotions, right?
If so, what happens to a unit with 26 XP (5 promotions) when its XP resets to 10?
How will this unit gain more promotions?

Any XP for pillaging?

 

[PieceOfMind]

Can you please elaborate on that?

Are you referring to units that are not attached to a great general?

Upgraded unit will keep all its promotions, right?
If so, what happens to a unit with 26 XP (5 promotions) when its XP resets to 10?
How will this unit gain more promotions?

Units that have a general attached do not lose their xp when upgraded. Also, their upgrade comes free.

Without a general, upgrading will cause your unit to lose all xp it had over 10xp. It retains all of its promotions however. If your unit had 26xp when you chose to upgrade it, it would not be able to earn another promotion until it reached 37xp all the way from 10xp again.

Oh, and no xp from pillaging..

 

[MosheLevi]

Thank you for your answers and for the link to the article.
It's a very nice article.

 

[Xellos-_^]

If you call the first promotion level 1, then in general, for level n you need n^2 + 1 xp for the nth promotion.

ie.
2,5,10,17,26,37...


For charismatic leaders, who need 25% less xp for each promotion,

Just multiply the above numbers by 3/4 and round up.

so

2,4,8,13,20,28, ...

From a single battle there is a maximum of 10xp as I understand. However the odds for a battle which would yield this many xp are so incredibly low it would be impossible for me to test. Even earning 4xp is usually very very difficult.

You always get at least 1xp if you kill the other unit. The defender gets no xp if the attacker withdraws, and in that case the attacker always takes 1xp.

Here is the article that describes how much xp you earn from battle. It is still correct in BtS.

When figuring how much xp you will earn from a victory, the defense modifiers and situational modifers (eg. promotions and defensive terrain) are taken into account, as well as the unit health.

you can't get above 10/11 when fighting pre-gunpowder units. if you max out at 10, it won't matter how many pre-gunpoder units you fight. you won't get anything for them.

 

[Ramesses]

you can't get above 10/11 when fighting pre-gunpowder units. if you max out at 10, it won't matter how many pre-gunpoder units you fight. you won't get anything for them.

I know that a unit can only earn up to 5 XP fighting animals, and up to 10 XP fighting barbs. I'm pretty sure there's no XP cap when fighting rival civ units.

EDIT: And I did not realize Joshua already said this when I posted it.

 

[PieceOfMind]

you can't get above 10/11 when fighting pre-gunpowder units. if you max out at 10, it won't matter how many pre-gunpoder units you fight. you won't get anything for them.

I'm not familiar with that rule. Where did you read this or how did you discover it? You can never earn any xp over 10 by fighting barbarians. Perhaps that is what you experienced in your game?

As Joshua said, the cap is 5xp for animals and 10xp for barbarians.

 

[Joshua368]

You can certainly get well over 10 XP before the gunpowder age.

 

[Bushface]

As for limited XP against early units, I'm sure that's not the case, though tanks clearing up longbowmen will only pick up 1XP per kill, for example.
The double XP gained by a victorious Warlord unit apply only to that unit; points towards the next GG are at the usual, single, rate.

 

[Xellos-_^]

I'm not familiar with that rule. Where did you read this or how did you discover it? You can never earn any xp over 10 by fighting barbarians. Perhaps that is what you experienced in your game?

As Joshua said, the cap is 5xp for animals and 10xp for barbarians.

that could be it, I rarely get into fights early on and most are with barbarians. I am a built and expand type till i get Calvary and then it is 50 Calvary thundering across the Continent as cities shall fall and my enemies will tremble.

 

[ruff_hi]

you can't get above 10/11 when fighting pre-gunpowder units. if you max out at 10, it won't matter how many pre-gunpoder units you fight. you won't get anything for them.

This is not correct. I have a warrior with 25XPs (Woodie III and Combat I) in the BC era - and from only fighting barbarians too.

 

[Joshua368]

This is not correct. I have a warrior with 25XPs (Woodie III and Combat I) in the BC era - and from only fighting barbarians too.

Did you mod the game to remove the barbarian cap?

 

[ruff_hi]

Did you mod the game to remove the barbarian cap?

No. Actually - I should save this for the Civ Quiz thread.

 

[Spitefire]

Goodie huts give exp sometimes.

now that there is a damage cap for seige units thay can be used to provide a limitless supply of GG points if a player douse not mind pinning a single out of the way enemy city down and throwing seige units at it, similarly if you have a unit with intercept abilitys and you place it close to an enemys air units thay just cant help trying to bomb it so with a really big stack the enemy air units will never get in and any unit that damages the air units get exp.

 

[Onionsoilder]

Goodie Huts can give 5 EXP a pop, so if you got to 10 EXP from barbarians then popped 3 Goodie Huts that gave EXP, that would give you 25. It is also possible for a random event to give a wounded unit 1-5 EXP.