A false flag operation is an act committed with the intent of disguising the actual source of responsibility and pinning blame on another party. The term "false flag" originated in the 16th century as an expression meaning an intentional misrepresentation of someone's allegiance. The term was famously used to describe a ruse in naval warfare whereby a vessel flew the flag of a neutral or enemy country in order to hide its true identity. The tactic was originally used by pirates and privateers to deceive other ships into allowing them to move closer before attacking them. It later was deemed an acceptable practice during naval warfare according to international maritime laws, provided the attacking vessel displayed its true flag once an attack had begun.

The Dachau trials, also known as the Dachau Military Tribunal, handled the prosecution of almost every war criminal captured in the U.S. military zones in Allied-occupied Germany and in Allied-occupied Austria, and the prosecutions of military personnel and civilian persons who committed war crimes against the American military and American citizens. The war-crime trials were held within the compound of the former Dachau concentration camp by military tribunals authorized by the Judge Advocate General of the U.S. Third Army.