Wildhorn,
If you exclude the Novice War incantations, then the War school currently has:
Level 1: Battle Fury, Charge, Evade, Sniper Shot
Level 2: Whirling Strike
Level 4: Akiro's Battle Cry
Except no one uses Akiro's Battle Cry and Whirling Strike is inferior to Battle Fury in almost all circumstances.
For comparison, the other schools:
Holy:
Level 1: Minor Heal, Purify, Renewing Rain (also 1 Water)
Level 2: Group Heal, Heal
Level 3: Lay Hands
Level 4: Ressurection
Dark:
Level 1: Reassemble, Vampiric Strike
Level 2: Unholy Resurgence, Zombie Frenzy
Level 3: Animate Dead, Drain Life
Level 4: Drain Soul
Nature:
Level 1: Burst of Thorns, Call of the Wild, Rouse the Beast
Mind:
Level 1: Force Push, Force Wave, Knockdown, Repulse
Level 2: Force Bash, Sleep
Level 3: Steal Equipment
Level 4: Mass Sleep
Arcane:
Level 1: Dispel, Seeking Dispel
Level 2: Teleport
Level 3: Banish, Drain Power, Purge Magic, Steal Enchantment
Level 4: Destroy Magic
Every school, with the exception of Nature (whose power lies mostly in enchantments), has more incantations than the War school. And generally, the incantations most commonly used in other schools aren't level 1 (Teleport, Sleep, Heal, etc).
That is why people say the War school is weak when it comes to enchantments. It really doesn't help that the War school is starved for enchantments as well.