I made an Alliance with the Iconians who were later in a war with the Krynn. I had both a standard alliance and a military alliance with the Iconians.
But nothing happened. I wasn't automatically dragged into the war on the Iconians' side as I should have been as an ally of theirs. After quite many turns they asked me to attack the Krynn, but it took a while and it seems I could have quite happily said no and there would have been no penalty?
So what's the point of an alliance? What does it do for the faction you are allied with and what does it do for you? And what's the difference between a basic alliance and a military alliance?