Several centuries later, in the Sengoku Period, yamabushi could be found among the advisers and armies of nearly every major contender for dominion over Japan. Some, led by Takeda Shingen, aided Oda Nobunaga against Uesugi Kenshin in 1568, while others, including the abbot Sessai Choro, advised Tokugawa Ieyasu. Many fought alongside their fellow monks, the Ikkō-ikki, against Nobunaga, who eventually crushed them and put an end to the time of the warrior monks.