As such, we would like to inform you that our armies are fully battle ready and at the arrival of this message, already marching towards your pitiful excuse of a fortification. At their arrival, immediate besiegement shall ensue until the small obstacles you refer to as a wall are toppled, and our warriors are free to storm and raid your mongrel pound.
That's what it reads to me anyway. I mean, he is describing attacking us at HQ. =/