Troop weapons with fire rates >1 still fire every turn in ground combat.
(No one reported this as a bug yet? I think it's a bug

)
Also, if this really counts as a bug (it's a bit more of a feature request

), I don't think warheads carried by troops actually damage the carrying troop stack; they only damage the enemy. (Combined with firing every turn this makes "suicide" bombers very powerful in Eclipse Mod

)