Thirteen members of the Saigō clan were impaled as an example

In 1560, the Saigō clan attempted to reaffirm its independence following the defeat of the Imagawa clan at the Battle of Okehazama. The successor Imagawa Ujizane reacted immediately to punish this insubordination by having thirteen men of the clan arrested. He had them impaled near Yoshida Castle to terrorize their allies.