Men pray at a cemetery for Shia volunteer fighters killed fighting with ISIS militants in the Wadi al-Salam, or "Valley of Peace" cemetery in Najaf, 100 miles (160 kilometers) south of Baghdad, Iraq. (AP/Anmar Khalil)

3,799 Killed In Iraq During June; Kurds Claim Number Much Higher

Of those killed, 946 were civilians; 141 were security personnel; 2,698 were militants; and 14 were members of the Kurdistan Workers Party