brennan said:
You don't need artillery to beat Infantry. If your defences are good enough, declare on someone. Play defensive war and concentrate on using Treb stacks to redline attackers, then destroy. You want to get Elites, then Armies. Armies are the key. If you can get them.
I like to use defensive thinning of the herd on Sid, but I do not use bombardment units. Preferably defensive armies are the way to go, backed with a barracks for full healing.
Like was mentioned, the attackers will be in large numbers, very large. Once the AI runs out of room to expand, it will have little else to do, but make troops.
This is because their cost is so low that any structures can be tossed up in a hurry. They build units until they are maxed on their support and income and a min amount of research.
Anyway what I wanted to submit is that the player has a finite amount of production and support. It is best to have units defending than say a treb or a cat.
When those attackers come that one HP off of the first x attackers, is not enough to save the day, unless you have enough defenders.
If you manage to have 10-15 (lets call them trebs for convenience), once the defenders are down in HP, you are going to wish you had 15 more defenders instead.
Trebs cannot defend and I have seen armies lost for being put up with 1 or 2 HP's left. If you have say 5 more muskets or pikes or whatever was appropriate for the time, the army is saved.
I admit this is more functional in archi and contients, where you are invading and face the limitations of shipping. If you can muster so many trebs to make a big deference, you did not have any concerns in the first place.
The thing is that only works, because you gave the AI only one target. In this game they have many targets and you have no means to force them into one battle zone. This is another problem with pangea maps on sid.
It also required that you only have one civs arms to deal with. That may not be the case in a pangea map. It may start out that way, but it is so much easier for the AI to get friends to jump in than it is for you. Even current enemies can be switched when you can bribe them with tech/cash/resources.
Things the human will have in very limited quanities.