Yes, not only were they highly skilled in warfare,
but the Iroquois were also great conquerors, having dominated
the North-Eastern part of North-America for years.
Iroquois warriors were feared by all, with rumors of ritual
cannibalism and torture running rampant. Perhaps this
fear propaganda made their enemies weaker, softening them up
for conquest. The Iroquois were also skilled at
psychological warfare, keeping the morale of their conquered
adopted tribe members low by making them second class
citizens.