In mid-1968, John S. McCain Jr. was named commander of all U.S. forces in the Vietnam theater, and the North Vietnamese offered McCain early release[44] because they wanted to appear merciful for propaganda purposes,[45] and also to show other POWs that elite prisoners were willing to be treated preferentially.[44] McCain turned down the offer; he would only accept repatriation if every man taken in before him was released as well. Such early release was prohibited by the POW's interpretation of the military Code of Conduct: To prevent the enemy from using prisoners for propaganda, officers were to agree to be released in the order in which they were captured