Members of the all-female Mother Aisha battalion sit in shooting position behind sandbags in a damaged house on the Aleppo Castle frontline January 3, 2015. This battalion, controlled by the Free Syrian Army, provides aid and security in addition to being a full military unit. The women who make up this force not only operate as fighters on the Old Aleppo frontline, but are also in charge of two field hospitals for injured fighters and a police station for women detainees. (Photo by Abdalrhman Ismail/Reuters)

Members of the all-female Mother Aisha battalion climb through a hole in a wall in a house on the Aleppo Castle frontline January 3, 2015. (Photo by Abdalrhman Ismail/Reuters)

Members of the all-female Mother Aisha battalion carry weapons as they walk on the Aleppo Castle frontline January 3, 2015. (Photo by Abdalrhman Ismail/Reuters)

Umm Mohamad (C), a masters graduate and commander of the all-female Mother Aisha battalion, talks with fellow Free Syrian Army fighters in Old Aleppo January 3, 2015. (Photo by Abdalrhman Ismail/Reuters)

Umm Mohamad, a masters graduate and commander of the all-female Mother Aisha battalion, speaks on a walkie-talkie in front of a Free Syrian Army police station in Aleppo January 3, 2015. The text on the wall reads in Arabic, “Revolutionary Military Police”. (Photo by Abdalrhman Ismail/Reuters)

Female fighters of the Kurdish People's Protection Units (YPG) carry their weapons as they walk in the western countryside of Ras al-Ain January 25, 2015. (Photo by Rodi Said/Reuters)

Female fighters of the Kurdish People's Protection Units (YPG) participate in military training in the western countryside of Ras al-Ain January 25, 2015. (Photo by Rodi Said/Reuters)

Female fighters of the Kurdish People's Protection Units (YPG) participate in a military training in the western countryside of Ras al-Ain January 25, 2015. (Photo by Rodi Said/Reuters)

A female fighter of the Kurdish People's Protection Units (YPG) fires a Rocket-propelled grenade (RPG) as she participates in a military training in the western countryside of Ras al-Ain January 25, 2015. (Photo by Rodi Said/Reuters)

Female fighters of the Kurdish People's Protection Units (YPG) prepare their weapons as they participate in a military training in the western countryside of Ras al-Ain January 25, 2015. (Photo by Rodi Said/Reuters)

Female fighters of the Kurdish People's Protection Units (YPG) carry their weapons as they walk in the western countryside of Ras al-Ain January 25, 2015. (Photo by Rodi Said/Reuters)

Female fighters of the Kurdish People's Protection Units (YPG) stand at attention at a military camp in Ras a-Ain January 30, 2015. (Photo by Rodi Said/Reuters)

Female fighters of the Kurdish People's Protection Units (YPG) receive instructions at a military camp in Ras a-Ain January 30, 2015. (Photo by Rodi Said/Reuters)

A female fighter of the Kurdish People's Protection Units (YPG) receives a military card at a military camp in Ras a-Ain, January 30, 2015. (Photo by Rodi Said/Reuters)

A female fighter of the Kurdish People's Protection Units (YPG) goes back to her place after receiving her military card at a military camp in Ras a-Ain, January 30, 2015. (Photo by Rodi Said/Reuters)

A female Syrian soldier from the Republican Guard commando battalion drives a tank during clashes with rebels in the restive Jobar area, in eastern Damascus, on March 25, 2015. The female battalion, which was created nearly a year ago, consists of 800 female soldiers who are positioned in the suburbs of the Syrian capital where they monitor and secure the frontlines with snipers, rockets and machine guns. (Photo by Joseph Eid/AFP Photo)

A female Syrian soldier from the Republican Guard commando battalion prepares to fire a B10 rocket during clashes with rebels in the restive Jobar area, in eastern Damascus, on March 25, 2015. (Photo by Joseph Eid/AFP Photo)

A female Syrian soldier from the Republican Guard commando battalion prepares to fire a B10 rocket during clashes with rebels in the restive Jobar area, in eastern Damascus, on March 25, 2015. (Photo by Joseph Eid/AFP Photo)

A female Syrian soldier from the Republican Guard commando battalion fires a machine gun during clashes with rebels in the restive Jobar area, in eastern Damascus, on March 25, 2015. (Photo by Joseph Eid/AFP Photo)

A female Syrian soldier from the Republican Guard commando battalion fires a rocket-propelled grenade (RPG) during clashes with rebels in the restive Jobar area, in eastern Damascus, on March 25, 2015. (Photo by Joseph Eid/AFP Photo)

A female Syrian sniper from the Republican Guard commando battalion aims fire during clashes with rebels in the restive Jobar area, in eastern Damascus, on March 25, 2015. (Photo by Joseph Eid/AFP Photo)

A female Syrian sniper from the Republican Guard commando battalion aims fire during clashes with rebels in the restive Jobar area, in eastern Damascus, on March 25, 2015. (Photo by Joseph Eid/AFP Photo)

A female Syrian soldier from the Republican Guard commando battalion drives a tank during clashes with rebels in the restive Jobar area, in eastern Damascus, on March 25, 2015. (Photo by Joseph Eid/AFP Photo)

A female Syrian soldier from the Republican Guard commando battalion drives a tank during clashes with rebels in the restive Jobar area, in eastern Damascus, on March 25, 2015. (Photo by Joseph Eid/AFP Photo)

Female Syrian soldiers from the Republican Guard commando battalion sit on a tank during clashes with rebels in the restive Jobar area, in eastern Damascus, on March 25, 2015. (Photo by Joseph Eid/AFP Photo)

A female Syrian soldier from the Republican Guard commando battalion jumps off a tank during clashes with rebels in the restive Jobar area, in eastern Damascus, on March 25, 2015. (Photo by Joseph Eid/AFP Photo)