How is your first campaign going?

[Zarky]

Last night I finished my first campaign! Long campaign Mori N/N.
Nearing the end I was mostly rushing provinces to actually get to 40, because at some places I was facing large enemy armies with no chances of achieving peace with anyone anymore.
I was setting up quite many vassals, which seemed a logical step after about 20 provinces owned. But much to my dismay I noticed that my longest time vassal (since turn 20 or so) which had a full stack of units many of which katana samurai attacked my other vassals in adjacent provinces (acquired within 10 turns of 1st vassals betrayal), so I had to scrape up an army and beat them.
None of my vassals previously had indicated any interest to betray me so I want to know what kind of experiences do other people have with vassals. Have they ever betrayed you? And I was surprised that they were able to declare war on each other, since I was under the impression vassal could only declare war on his master. So can they declare war on other people, or just other vassals under same master?

[A Nerd]

I had an odd thing happen in my current Shimazu campaign. I am at war with two clans on the island you start on. One red and one white, I cannot recall the names. That I can understand. But I was sending two ships to explore the rest of Japan to discover new clans so I could trade and the like with them. Along the way I discoverd Imagawa. A small clan of three provinces far east of me. My enemies are not allies with him, I don't think they trade with him and our only interaction is a small fleet that passed by their coast. A turn or two later, he declared war on me! We don't share borders or anything! I found that odd. Finances are low at the moment and I want to avoid as many conflicts as possible. Bizare. He has no fleets near my small 3 province holdings either. None of my two trade fleets were molested as well.

[LeftEyeNine]

Don't worry, Imagawa have a habit of drinking themselves up to the point where they can't decide why they were there despite outnumbering you 1 to 10.

^^

[A Nerd]

Don't worry, Imagawa have a habit of drinking themselves up to the point where they can't decide why they were there despite outnumbering you 1 to 10.

Dumb ol Imagawa! I think I will plan a naval invastion when I become stronger just to get revenge!