Five Pandavas under the guidance of Lord Krishna attended a 55 days training programme on Leadership. Their grandfather Bhishama Pitamah was lying on a bed of arrows on Krukshetra battlefield. He gave discourse to them as described in Shantiparva and Anushashan Parva of Mahabharata epic.
"Global Business Leadership: Lord Krishna as Role Model for Global Leadership,"
Academic Leadership Journal: Vol. 7
, Article 15.
Available at: http://scholars.fhsu.edu/alj/vol7/iss4/15