Infiltration and Reconnaissance Party

The Infiltration and Reconnaissance Party is a team led by Anko Mitarashi, tasked with tracking down Kabuto Yakushi, and later to acquire information on Akatsuki's forces in 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, Muta and Ranka 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.

Trivia

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