Most useful division in the war

[Sierra G719]

Not sure if the Commando Unit counts as a small division, but I say the 3rd division because they are the one's taking that have been fighting off Tobi and his 6 paths as well as the 7 Ninja Swordsmen.

 

[Negative Knight]

Definitely Kankuro's Division. If Deidara and Sasori weren't neutralized pretty quickly, the war would of become pretty ugly.

 

[SuperFlyzzED]

Negative Knight's division because his is baws.

Kankuro's was pretty useful, Kakashi's had to stop seven swordsmen, and Gaara's didn't do bad.