Random move armies and casting sequence

[thejeff]

Herode said:
Yes, but what about symetrical situations ? The standard case is : my army in A attacks an ennemy province X. An ennemy army in Y attacks my army in A. Who moves first and why ?

But why is that ? Is initiative dependant on the nation ?

Both armies move simultaneously. Your army in A attacks X. The enemy from Y attacks A, after your army has left.

There have been claims that attacks always go in nation id order if 2 armies attack a 3rd party province and that seems most common, but I have seen it reverse.