The frontlines of Mosul

Federal police members aim their weapons at a man, whom they thought was a member of Islamic State but later turned out to be mentally handicapped, during a battle with Islamic State fighters at Bab al Beed district in the old city of Mosul....more

Federal police members detain a man, whom they thought was a member of Islamic State but later turned out to be mentally handicapped, during a battle with Islamic State fighters at Bab al Beed district in the old city of Mosul. REUTERS/Youssef...more

Federal police members take cover during a battle with Islamic State fighters at Bab al Beed district in the old city of Mosul. REUTERS/Youssef Boudlal

Federal police members take cover during a battle with Islamic State fighters at Bab al Beed district in the old city of Mosul. REUTERS/Youssef Boudlal

Federal police members prepare their munitions during a battle with Islamic State fighters at Bab al Beed district in the old city of Mosul. REUTERS/Youssef Boudlal

Federal police members take cover during a battle with Islamic State fighters at Bab al Beed district in the old city of Mosul. REUTERS/Youssef Boudlal

Iraqi Federal Police fight in the frontline at Bab al Jadid district as the battle against Islamic State's fighters continues in the old city of Mosul. REUTERS/Youssef Boudlal

Federal police members take cover during a battle with Islamic State fighters at Bab al Beed district in the old city of Mosul. REUTERS/Youssef Boudlal

A broken glass window of military vehicle is seen during a battle with the militants in Mosul. REUTERS/Khalid al Mousily

Iraqi rapid response members fire a missile against Islamic State militants during a battle with the militants in Mosul. REUTERS/Khalid al Mousily

Federal police member fires his rifle near the body of an Islamic State fighter during a battle at Jada district in western Mosul. REUTERS/Youssef Boudlal

Federal police members take their position during a battle at Jada district in western Mosul. REUTERS/Youssef Boudlal

Federal police members fire a rocket at Islamic State fighters' positions during a battle at Jada district in western Mosul. REUTERS/Youssef Boudlal

Federal police members drive a military vehicle during a battle at Jada district in Western Mosul. REUTERS/Youssef Boudlal

A sniper of the Iraqi Federal Police takes his position at a destroyed builiding near Islamic State fighters' positions at Bab al Jadid district in the old city of Mosul. REUTERS/Youssef Boudlal

Iraqi Federal Police take cover during a battle with Islamic State fighters at Bab al Jadid district in the old city of Mosul. REUTERS/Youssef Boudlal

An Iraqi Air Force helicopter fires a missile against Islamic State militants during a battle in Mosul. REUTERS/Khalid al Mousily

A sniper of the Iraqi Federal Police takes his position at a destroyed builiding near Islamic State fighters' positions at Bab al Jadid district in the old city of Mosul. REUTERS/Youssef Boudlal

A member of Iraqi Federal Police takes his position during a battle against Islamic State militants at Bab al Jadid district in the old city of Mosul. REUTERS/Youssef Boudlal

A member of the Iraqi federal police smokes during clashes with Islamic State militants, in Mosul. REUTERS/Khalid al Mousily

Smoke rises from clashes during a battle between Iraqi forces and Islamic State militants, in Mosul. REUTERS/Khalid al Mousily

A soldier of Iraqi army sits in a tank during clashes between Iraqi forces and Islamic State militants, in Mosul. REUTERS/Khalid al Mousily

Iraqi Federal Police fires his rifle at Islamic State fighters' positions at Bab al Jadid district in the old city of Mosul. REUTERS/Youssef Boudlal

Iraqi Federal Police take cover at the frontline at Bab al Jadid district as the battle against Islamic State's fighters continues in the old city of Mosul. REUTERS/Youssef Boudlal

A sniper of the Iraqi Federal Police takes his position at a destroyed builiding near Islamic State fighters' positions at Bab al Jadid district in the old city of Mosul. REUTERS/Youssef Boudlal

Iraqi Federal Police fires a weapon at Islamic State fighters' positions at Bab al Jadid district in the old city of Mosul. REUTERS/Youssef Boudlal

Iraqi Federal Police moves through a hole at Bab al Jadid district as the battle against Islamic State's fighters continues in the old city of Mosul. REUTERS/Youssef Boudlal

Federal police members carry their weapons as they head to the frontline to fight against Islamic State militants, in Mosul. REUTERS/Youssef Boudlal

Smoke rises from from the old city during a battle against Islamic State militants, in Mosul. REUTERS/Youssef Boudlal

A displaced Iraqi family escape from clashes during a battle between Iraqi forces and Islamic State in Mosul. REUTERS/Youssef Boudlal