Nato equipment should be better and more expensive Russian Chinese equipment should be weaker and cheaper.
Mercenaries mod Mercenaries where such a huge factor throughout history its sad to see them left out the Civ series. Even today in Iraq the US is using them. Builder type civs with good economies should be able to buy a quick defense but not to much!
American they are actually a strong civ but the other AIs hate them and pound them every game so balancing them could be tricky, I think the best bet is that if the survive to the modern ages the get more bonuses than other civs to make up for their lagging economy. See above post.
Arabian I think you have this civs UU right. Their leader should be more aggressive though. T-55 tanks mig 17, 19 or 21 moderate civ.
Aztec I love this civ as is strong early on, gets real weak as time goes by. Maybe an industrial gorilla unit or a line jaguar upgrades throughout history.
Babylon good civ, maybe a Sadam leader with Russian type equipment in the modern era.
Byzantine moderate to good civ If they get to guilds with a strong economy intact they are a powerhouse. Nato type modern equipment.
Carthage Strong civ that should be set to aggressive early on, Ive seen them wait way to long attack somebody. Russian type equipment and Bedouin camel cavalry.
Celtic weak civ although the new leader might be a little better There UU sucks Celtic warriors where feared be the Romans I like Civ3 UU better movement of 2 Modern units nato Type I like the longbow you added.
Chinese moderate civ they should excel in the middles ages getting early bronze cannons with gunpowder Modern unit Silkworm missile or cheap infantry. Strong present day navy.
Dutch Moderate civ . A renaissance to pre industrial powerhouse, see above post Modern -Luchtmobiel Speciaal a recon vehicle with movement of 3 + good spotting
Egyptian strong very early but get weaker as time goes on by the end of the classical age their tecnoloy supereior but always have a weak military. Modern unit Mirage Fighter better than the f16 but weaker than the f15. Modern - Nodong-1 ( South Korea ) Missile or Scud
English weak early but they get strong as time goes on I hate that the game uses longbow as a standard unit because this really is an English unit that reeked havoc on the Powerful medieval French. Should have a strong navy from frigates to WW2.
Ethiopian good civ Modern unit can be Nato or Russian.
French was good in Warloads but only seams to be moderate now This civ always attacks the Human player as soon as it can no matter how its says it feels about you the only exception is if your giving it horse iron copper or ivory, so Id like to see it stronger they have many units to chose from starting with French Foreign Legion that is rare to see in other mods. Other nations that can use their weapons SE Asian African Middle East. - Good weapons: Fighter early ww2 and ww1 tanks missiles Napoleonic infantry and Cav and cannon cheap frigates for a larger navy.
German empire somewhat weaker in warlords but seams moderate now Panther and Panzer tanks Tigers are nice but that wasnt their backbone. Modern Leopard tank. And the Panzerhaubitze it rocks.
Greek strong early on in Warlords seams weaker now This should be an early powerhouse as they tend to attack the stronger civs and will always take a shot or 2 at the human player they always go to war with Persians in warlords they had at leat a 50/50 change of beating the Persians, but now they always seam to lose. Modern Nato type units.
Holy Roman strong civ modern German or French type of units.
Inca empire weak civ I cant remember a game where this civ was not either a Vassal or was eliminated it certainly never was a powerhouse in modern times.
India strong civ that gets pounced by the all the Other AIs they should get an early elephant to help them survive read more:
http://www.allempires.com/article/index.php?q=military_ancient_india - Modern UU the Vijayanta tank.
Japan moderate to strong if they get to the modern age with a good economy they are devastating WW2 UU I like yours maybe a zero or Imperial Marine or jungle fighter (most forest and jungles are gone by then though). A late techno weapon like a cyborg.
Khmer strong civ but in your mod they use the Writing civic so they are weaker. Modern unit: M551 Sheridan carries the MGM-51 Shillelagh anti-tank guided missile
Korean strong civ if left alone to research modern unit: spy and computer age unit a hacker
Malinese strong civ but the AI tends to gang up on them needs a new leader with Shakas xml - Sundiata Keita (founder of the empire). UU Caravan more gold. Modern unit: a gorilla type unit.
Mayan moderate to strong - see above modern unit mountain infantry.
Mongolian moderate needs to be more powerful in the middle ages - see above modern unit Chinese or Russian.
Native American strong civ but it tends to ganged up on by the Other AIs I like your UU hope it looks like an Indian on a horse! Modern UU any American Unit - Navajo marines movement + spotting.
Ottoman moderate to strong modern UU BTR-80 heavy scout car
Persian strong see above modern unit - Guards Corp - fanatic promotion (Army of the Guardians of the Islamic Revolution)
Portuguese strong see above Modern unit Nato type.
Spanish moderate should be a powerhouse in the late middle ages to pre industrial UU treasure galleon - (see caravan) can built 2 at a time. modern unit - AMX 30 tank or a Franco Fascist unit New leader Franco - Spiritual and Aggressive.
Sumerian strong -see above modern unit Russian or Chinese.
Viking - moderate to strong they must have a longboat! Can enter 1 sea square from a coast square modern UU - Ticonderoga class missile cruiser.
Zulu strong the best military civ in the game modern unit - Olifant Main Battle Tank