Infiltration and Reconnaissance Party

The was an elite team led by Anko Mitarashi, tasked with tracking down Kabuto Yakushi, and later to acquire information on Akatsuki's forces during the Fourth Great Shinobi World War.

History
The team was first seen composed by Anko, Sai and Yamato. Yamato was forced to abandon the mission because he sensed that Naruto had reached the eighth tail.

Later, Anko, Tokuma Hyūga and two other Konoha shinobi follow a trail of dead bodies left behind by Kabuto, all the way to Mountains' Graveyard, where Madara Uchiha's headquarters is located.

Most recently, the team was composed by Anko, Tokuma, Ranka and Muta Aburame, who discover the numbers of Akatsuki's army through gathering information through local worms and the Byakugan. Anko commands the others to leave and pass the information on, while she would investigate things further. They oblige, but are tracked down by Akatsuki's Surprise Attack and Diversion Platoon, while Anko begins fighting Kabuto. The remaining members were captured by Sasori and Deidara, but were consecutively rescued by the Surprise Attack Division of the Allied Shinobi Forces.

Trivia

 * Anko has been seen in teams tracking down Kabuto three times, with different team-mates each time. It's likely the team did not actually become the Infiltration and Reconnaissance Party until its most recent make-up.