"To date, based on information available, CJTF-OIR assesses at least 841 civilians have been unintentionally killed by Coalition strikes since the start of Operation Inherent Resolve. A total of 485 reports are still open," the Operation Inherent Resolve's Combined Joint Task Force report said.
The latest number covers all civilian casualties since the start of the campaign in August 2014 through January 2018.
The coalition based its conclusions report on a review of 2,015 reports of possible civilian casualties – 218 of which were deemed credible — from 29,070 strikes that took place during the period, the report said.
In January 2018, coalition strikes killed at least 10 civilians, based on four of the 116 casualty reports that US officials considered credible, according to the report.
The US-led coalition of more than 70 members is conducting military operations against the Daesh group (outlawed in Russia) in Syria and Iraq. The coalition's activities in Iraq are operated in collaboration with Iraqi officials, but those in Syria are not authorized by the government of President Bashar Assad or the United Nations Security Council.
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Daesh was ousted from Raqqa, their de facto capital, in October 2017 by the US-backed Syrian Democratic Forces (SDF).
While Daesh has lost all of their territory in Iraq and adhere to a mere shell of their former holdings in Syria, they have switched to using guerrilla and terrorist tactics to continue to beseige their many enemies. As such, security efforts have switched to targeting the remains of the group's leadership.