Class 3 Fighter Explanation [Lv 75-105]

Knight is the advancement of Swordsman, they can learn supportive skills that increases their def and magical def and basic recovery skills as well(not healing). Kinda balance between attack and defense

Rune Knight is a magical version of Knight. They have skills which depends on INT and WIS compared to strength. They have more party based support skills such as mp recovery, additional dmg, def, hit rate, dex skills etc.

Phalanx is the supposed path followed after Infantryman. As you would have expected Phalanx to be a defensive class and have plenty of skills related to defense, different from the ones of Knights. They are the only class in warrior's tier 4 to have basic healing.

Gladiator is the advancement of Mercenary, they have the biggest potential of dealing highest damage among the tier 4 jobs due large amount of attacking skills that they can learn. Their supportive skills are more towards gaining an advantage in attack than defense. They can only wear light armors compared with the other 3 classes in the same tier which can wear heavy armors.