شمشي أدد الأول
Another campaign for which records exist is a campaign that Ishme-Dagan I appears to have engaged in was against the nomadic tribe called the Ya’ilanum. Shamshi-Adad I had ordered Yasmah-Adad to execute all the members of this tribe. However, it was the troops of Ishme-Dagan I who later exterminated the entire tribe. There are two accounts of this annihilation, one from Shamshi-Adad I, and one from Ishme-Dagan I. Shamshi-Adad I seems to have slightly reneged on his earlier bloodthirstiness toward the tribes, as his account appears to limit the killing to the leaders and the combatants of the army, but in a letter from Ishme-Dagan I to Yasmah-Adad, it seems the whole population was eradicated, as he states: