The format for DoW's should be as follows. You should also post a narrative as to the events the attacking nation takes leading up to the battle.
Type of Battle: Siege, Skirmish
Date/Time: Post a date and time on which the battle will be fought
Sides of the Battle: Post who the defenders/attackers are
Location and Boundaries: Ex. In front of Minas Tirith, The Hornburg, Ithilien
Victory Conditions: Ex. Defenders must drive out all attackers, attackers must kill all defenders
Rewards: Ex. Mordor gets to siege Minas Tirith, Dwarves may pillage the city, Edoras may not be sieged for "X" amount of time
Rules: No hacking No team killing No retreating beyond designated place of battle No returning to battle upon death Etc.