Village in Distress: A New A-Ranked Mission!

is episode 69 of the original Naruto anime.

Synopsis
Once Naruto and Shikamaru awaken, Kakashi summons Pakkun to assist them in tracking down Sasuke. Meanwhile, Orochimaru begins his battle with his former sensei, The Third Hokage. Both display powerful techniques in what the observing ANBU describe as a Kage-level battle. Early in the battle, Orochimaru resurrects the First Hokage and Second Hokage to fight the Third. The risen Hokage apologize to their former student as Orochimaru prepares them for combat. The Second Hokage says that it is the forbidden jutsu Reanimation.