>I don't know if this is known or not, or if it's supposed to be that way - but I had a
>(large) army that was starving, despite several Cauldrons of Broth being present in the
>hands of some of its commanders. I started shuffling some Cauldrons around, and the supply
>usage dropped - it looks like a Commander with 2 Cauldrons will benefit from the effects
>of only one.

Duplicate items give *no* double effect (exception: "production" items like Lifelong Protections, Soul Contracts or Fever Fetishes). You cannot duplicate an item and a spell either, IIRC (like Quickness + Boots of Quickness, or Luck + Pendant of Luck).

>I don't know whther this is supposed to work this way, but I tried to teleport my commander
>into a province that had a Dome of solid air. He got repelled by it, and I got the message
>that the dome prevented a hostile spell.

In dom1 domes prevented _all_ troops from teleporting in the province, even your own (they can gate away safely). And this rule also applies to "Gateway", "Faery Trod", "Cloud Trapeze", etc. On the other hand, automatic return effects like the rebirth of an immortal creature or the "Returning" spell in the protected capital were still possible.

Cheers