Though an expert in warfare, Dronacharya lived the simple life of a Brahmin, with little money or property. As a result, Ashwatthama had a difficult childhood, with his family unable to even afford milk. Wanting to provide a better life for his family, Drona goes to the Panchal Kingdom to seek aid from his former classmate and friend, King Drupada. However, Drupada rebukes the friendship, claiming a king and a beggar cannot be friends, humiliating Drona. After this incident, and seeing the plight of Drona, Kripacharya, invited Drona to Hastinapur. There, he came upon the attention of his co-disciple Bhishma. Thus, Dronacharya became the guru of the Pandavas and of the Kauravas in Hastinapur. Ashwatthama was trained in the art of warfare along with them.