English (Source)
Summons a Banner of Power at a tower tile which attacks whenever a nearby invader takes damage (1 second cooldown). The attack deals <Highlight>{{ORC_CHIEFTAIN_WAR_BANNER:DAMAGE_PERCENT:percent}}% (+{{ORC_CHIEFTAIN_WAR_BANNER:DAMAGE_PERCENT_PER_LEVEL:percent}}% per Commander level)</> of the damage the invader took.
<i>The Banner counts towards building occupation just like any other tower.</>
English Translation
Summons a Banner of Power at a tower tile which attacks whenever a nearby invader takes damage (1 second cooldown). The attack deals <Highlight>{{ORC_CHIEFTAIN_WAR_BANNER:DAMAGE_PERCENT:percent}}% (+{{ORC_CHIEFTAIN_WAR_BANNER:DAMAGE_PERCENT_PER_LEVEL:percent}}% per Commander level)</> of the damage the invader took.
<i>The Banner counts towards building occupation just like any other tower.</>