The U.S. Air Force has stopped teaching a course titled "Christian Just War Theory."
It was part of the curriculum for nuclear missile launch officers for more than 20 years.
The course quoted scripture and passages from Augustine's "Qualifications for Just War."
It was led by Air Force chaplains and took place during a missile officer's first week in training at Vandenberg Air Force Base in California.
The Truth Out website published a report on the class and claimed it amounted to a government endorsement of religion.
The Nuclear Ethics and Nuclear Warfare training "has been taken out of the curriculum and is being reviewed," said David Smith, chief of public affairs of Air Education and Training Command at Randolph Air Force Base in Texas.
"The commander reviewed it and decided we needed to have a good hard look at it and make sure it reflected views of modern society," he added.