Well, I've read the AARs (especially the on-going Macedonian one), and I've noticed that armies can't move through foreign territory at will. The Macedonians declared war on the Seleucids, but couldn't walk through Pontus, and had to take boats. Why was this so? In history, if Macedonia's navy was small and the army needed to walk through Pontus, the soldiers would have followed that route. In doing so, Macedonia wouldn't have declared war on Pontus, either; there would have been negotiations at the border, and then they would have either been granted access, or had that access contested by frequent raids.
Why doesn't the game allow you to march through enemy territory? It could simply institute a penalty to relations and attrition, no? The current situation doesn't seem realistic. There are numerous occasions when armies traveled through neutral lands without declaring war. Conflicts may have broken out during such travels, but other times the neutral power was quite happy to let them through as quickly as possible.
If you need a specific example, just remember Xenophon's Anabasis. He marches through many different states. Some of them are in direct conflict with the 10,000, others are simply skirmishing around them, and others help them. Think of the people in Kurdestan, and compare them to the people whom the Athenian slave speaks to (the people near the black sea), and you will notice the variety of responses Rome could implement when armies try to cross neutral ground.
Why doesn't the game allow you to march through enemy territory? It could simply institute a penalty to relations and attrition, no? The current situation doesn't seem realistic. There are numerous occasions when armies traveled through neutral lands without declaring war. Conflicts may have broken out during such travels, but other times the neutral power was quite happy to let them through as quickly as possible.
If you need a specific example, just remember Xenophon's Anabasis. He marches through many different states. Some of them are in direct conflict with the 10,000, others are simply skirmishing around them, and others help them. Think of the people in Kurdestan, and compare them to the people whom the Athenian slave speaks to (the people near the black sea), and you will notice the variety of responses Rome could implement when armies try to cross neutral ground.