Yes, the experience from multiple instructors does stack. But you can only have one military academy per city.

give a culture boost
Watiggi said:My current unit production city has 3 instructors, barracks, ger, westpoint, heroic epic and a military academy. With Vassalage and Theocracy, it is producing 17xp Combat V gunpowder units and 21xp Cavalry.
I ultimately used a general as an academy so I could just tip the scale of units built in 3 turns to 2 turns each. I found it really helps at certain times.
AriochIV said:Yes, the experience from multiple instructors does stack. But you can only have one military academy per city.
5 promotions for melee/gunpowder units with 17xp, if you have Aggressive.Proteus said:Really nice to have Elite units which start with 4 promotions.
Conducting war with a lot of Combat V units is great - especially if you have a Medic III Warlord nearby. The Combat V units heal really quickly in enemy territory. They are also a Warlord away from Combat VI which really rocks: A jump from +50% strength to +75% is really noticeable in the odds.Lager said:Even if the leaders provided a 50% boost it would be hard to justify not taking the +2 exp option. With the right wonders and civics and two instructors you can put out a unit a turn with 17 exp points in your military city. I did this with tanks in a Prince game I played recently... CR3, Combat1 straight from the barracks is sick...
I'm in the midst of a game where I captured Athens early and turned it into a military power house. It produces over 200 hammers per turn and has:Theodorick said:I once had a high production city with barracks, stable, west point, heroic epic, military academy, and one instructor. Talk about an over-powered military city! It was making one powerful unit per turn, and in no time I'd have a new army ready to destroy a nation or two.
suspendinlight said:I'm in the midst of a game where I captured Athens early and turned it into a military power house. It produces over 200 hammers per turn and has:
-2 military instructors
-military academy
-heroic epic
-west point
-pentagon
-barracks, stables, drydock
Plus Tokugawa is agressive/protective and so my units are coming out with like 13 XP and free promotions.

AfterShafter said:Well, the way I look at it is... If the +25% boost will make a rifleman go from 3 to 2 turns in my best production city, while the +2 xp bonus will not actually get them an upgrade out the gate, I consider it worthwhile... Particularly when I'm at a tech disadvantage and need throwaway more than elite units.
Hell, sometimes the 25% bonus allows you take make sacrificial catapults every turn rather than every two turns. That's a huge benefit, moreso than an upgrade on those catapults.
You mean, 5 catapults in 8 turnsKrikkitone said:Because of Carry over, that Can't happen.... if it is taking you 2 turns to make catapults now... Exactly 2 turns...that means 20 hammers
and you add a M.A. then that means 25 hammers... which means that
3 catapults will take 2 turns each
2 will take 1 turn each
(8 catapults in 5 turns)
25% just isn't quite enough... especially if most of your military comes out of your Heroic Epic.