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EliteTK

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AFAIK the Emperor will get military access through any country in the HRE and any country can march their armies through their enemies' vassals even if they're at peace.
 

calvinhobbeslik

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The title kinda tells you all you need to know about what just happened in my game, can anyone tell me why this happened? I mean, it's not supposed to, is it?

You get military access for some time after you've peaced out with a country, so you can bring your troops home. Also, you get free military access through vassals, and the Emperor gets free military access throughout the HRE
 

bubell

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I've seen this happen from time to time when there was no explanation for it. Very early in a game I played as Castille, France declared war on England and Portugal honored it's alliance with England. Portugal's troops began heading for France through Castille without military access. I saw their army and even offered Portugal military access through Castille, but they refused and kept on marching.
 

YagabodooN

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I believe any country involved in a war that also involves the emperor will also get military access throughout the entire HRE, be they enemies or allies.

I second this, I was playing a Hungary game where Bavaria was my ally fighting France and suddenly they became emperor and I was finally able to help them.
 

jdrou

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I believe any country involved in a war that also involves the emperor will also get military access throughout the entire HRE, be they enemies or allies.
Correct. And just to emphasize, this only applies during the war. After the war you will probably get similar access because of the truce though (as calvinhobbeslik noted).