If you plan to join the Knights Of Cygnus and you are interested in becoming a Dawn Warrior here's the skill build.
Benefits of becoming a Dawn Warrior are having rage, and the ability called HyperBody.
HyperBody-Temporarily increases the Max HP and Max MP of all members of the party around the area.
Rage-Temporarily boosts the weapon attack level of everyone in the party around the area, but also decreases the level of weapon defense.
So bascially Dawn Warrior's are a go if you want to be immensely strong in power. Or if you want to support people and make them into Double Dance Kingdra's