Well, I would have to say that a question like "How long does it take to complete a major Military operation" can be interpreted in so many ways that it's virtually impossible to come up with an objective standard to answer by, so I'm not going to give a direct answer like "XX years". Instead, I'll try and go by the situation you describe.
Generally, at least until you get a superior technological advantage, war is going to be a pretty slow process, consisting of many cycles of attacking, loosing some troops while gaining some ground, and then being naturally forced to a defensive position as you fortify the new ground, heal troops, build more for the next wave/move more in. You can't expect for horsemen/warriors to have the strength to continually stomp over a large expanse of land like South america, all in one foul swoop. It sounds like you've found this out. Thiers a lot of reasons for this:
- Obviously, the more combat you get in, the more damage you take. Even with battlefield medicine, at least a few turns will be spent idle as your troops heal. Without it, it's only a matter of time until they eventually fall.
- As your troops spread out farther into enemy territory, reinforcements (from your home base) are likewise getting farther and farther away. Even if you continually churn out new units, it just takes longer for them to get where the action is.
- Likewise, as reinforcents arrive, they typically aren't in the densely packed "army format" that your first wave probably was. They are in random pockets of indivual units. Easier to pick off by enemy forces
- last of all, the longer war lasts and the farther your troops get from your borders, the more war weariness starts to take effect.
My point in all this is that war SHOULDN'T be a matter of "start war, don't stop until I take over SA." Ideally, or at least how I ideally see it is you mass some troops up close to your border. The first few turns of the war can also be the most advantageous as you can choose what terms you fight on, and wait for a weakness in your foe. You declare war, and as quickly as possible you just pound the Tar out of them. Think along the lines of 3-4 turns here. take some cities, but do it QUICK. And then stop. Don't get too greedy. Try to go for peace, maybe get another city out of the process. And spend that peacetime Immediately building up temples, culture stuff, etc., or else you may lose those cities without a shot even being fired. Build your railroads right up to your new borders, so you have the mobility to attack quickly once again when you are ready. Even a small setback like this to the enemy can seem to put a huge dent in thier score. It may also be enough to give you a the cities to start churning out the technology.
So, doing this, how long does it take to take over South america? probably a pretty long time. But at least you can do this while continuing to expand culture, do research, build improvements, etc.
Now, thing is, I just got TANKS. This things are friggin awesome. I'll still do the strategy as listed above, the only thing is that instead of taking 1-2 cities over every 20 turns, I'm taking over about 10.
:tank:
Once you get these things, I would suspect ( assuming no one else has them) that, given a well timed attack, you could easily take over SA in under 20 turns. Makes all that struggling you did seem kinda pointless, huh?
