ISIS is launching a night time attack on Iraq's Brigade 36 in the Illea area around Mosul.
Iraq's soldiers counter the offensive, but they know this will not be the last time.
Iraq's cavalry are equipped with tanks to bring the fight to the enemy.
A Yezidi interpreter named Shahin who had worked with Americans is shot by ISIS snipers.
While near the frontlines he rescued a mother and a daughter.
He is evacuated to safety, but died 10 days after sustaining his wounds.
Iraqi commanders are describing this fighting as the toughest they've experienced.