Combat mode

A combat mode is a toggled state that a character maintains in combat. Only one combat mode can be active at a time; toggling on a second mode will cancel the first. Combat modes are canceled when a character leaves combat (e.g. the current combat target dies and no other enemies are in range) and when a character takes a non-combat action (such as movement, excepting movement made without breaking combat). Combat modes can be activated while a character is standing still, and will not be canceled until some non-combat activity is initiated.

The combat modes in Neverwinter Nights are the following.
 * counterspell
 * defensive casting
 * defensive stance
 * dirty fighting
 * expertise (and improved expertise)
 * flurry of blows
 * parry
 * power attack (and improved power attack)
 * rapid shot