Iraqi forces hold a position near al-Shurah, south of Mosul, as they advance toward the city on October 17.
Peshmerga forces attack ISIS militants with howitzers from Mosul’s Zardak mountain on October 17.
Smoke rises from a suicide car bomb attack carried out by ISIS in the village of Bedene, near Mosul, on October 17. Mosul represents ISIS’ last stronghold in Iraq.
Coalition forces attack ISIS targets in the Bertela region near Mosul on October 17. The coalition includes Iraqi, Kurdish and American forces.
Iraqi coalition forces deploy in the area of al-Shurah as they advance toward Mosul on October 17. Before ISIS gained control, Mosul was inhabited by more than 2 million people. Only about 1 million residents now remain.
Iraqi-led forces deploy south of Mosul. If the offensive is successful, the Abadi government would claim a major victory, ending ISIS’ territorial dominance in Iraq’s oil-rich north.
Iraqi forces advance near al-Shurah on October 17. The coalition has been preparing for the Mosul offensive throughout the past year.
Kurdish Peshmerga fighters move into position near Bedene.
A Kurdish Peshmerga convoy drives towards the Khazer front line, about 30 kilometers (19 miles) east of Mosul on October 17.
Kurdish fighters are perched atop a military vehicle as they advance toward villages on the outskirts of Mosul on October 17.
A Kurdish Peshmerga convoy moves toward the Khazer front line on October 17.
Kurdish fighters advance toward Mosul on October 17.
Members of the Iraqi coalition gather around a fire at Zardak mountain ahead of the offensive.
Iraqi-led forces assemble their weapons on Zardak as they prepare for the offensive.
Peshmerga forces deploy in the dark near the village of Wardak early on October 17.
An Iraqi police officer inspects his weapon at the Qayyara military base about 60 kilometers (35 miles) south of Mosul on Sunday, October 16. If Iraqi forces regain control of Mosul, it will be the latest in a string of victories, including the recapture of the Qayyara oil refinery and airbase.
A smoke cloud billows as Iraqi forces gather at the Qayyara military base on October 16.
A Sunni Iraqi police officer prays at the Qayyara airbase on October 16.