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ATTACK     <target> [flag]                      time: 1 day     priority: 3
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Engage two stacks in combat.  Only the top most character in a stack may
initiate combat.

<target> may be another unit, a ship, or a building, or a sub-location.

If flag is 1, the attacker will not attempt to move into the defender's
position.

For example, one would use the order "ATTACK jg99" to attack this
castle:

        Inner locations:
           Castle [jg99], castle, defense 20, owner:
              Law Netexus [2020], with three peasants

Do not use "ATTACK 2020", as Law Netexus is not in the same location as
characters outside the castle.  If successful, the attackers will move
into the castle.

A unit may not attack another member of its own faction.
Two units in the same stack may not engage in combat.  

Prisoners may not be attacked.  To attack the stack holding a prisoner,
issue an ATTACK order for another member of the stack (such as the top
unit in the stack).

See the combat section for details on the resolution of battles.