when did the war start in naruto shippuden
Naruto With Nagato's eventual death, Tobi, disguised as Madara Uchiha (one of Konoha's founding fathers), announces that he wants to get all nine Tailed Beasts to perform an illusion powerful enough to control all humanity, to create world peace. The leaders of the five ninja villages refuse to help him and instead join forces to confront Tobi and his allies. That decision results in a fourth great ninja war between the combined armies of the Five Great Countries (known as the Allied Shinobi Forces) and Akatsuki's forces of zombie-like ninjas. The Five Kage tries to keep Naruto, unaware of the war, in a secret island turtle near Kumogakure (Hidden Cloud Village), but Naruto finds out and escapes from the island with Killer Bee, the host of the Eight-Tails, and the two of them head for the battlefield.