He said the report recommended that 19 soldiers be investigated by police for possible charges, including murder.
The chief announced the results of a four-year investigation into Paul Brereton, a judge who was asked to investigate the allegations, interview more than 400 witnesses, and review thousands of pages of documents.
“I sincerely and unreservedly apologize to the people of Afghanistan on behalf of the Australian Armed Forces for any wrongdoing by Australian soldiers,” said Campbell.
He said he spoke directly to his Afghan military colleague to express his remorse.
“This alleged behavior profoundly disregarded the confidence of the Afghans who asked us to help them in their country,” said Campbell. “It would have destroyed the lives of Afghan families and communities and caused immeasurable pain and suffering. And it would have endangered our mission and the security of our Afghan and coalition partners. “