Davis (defendant) was suspected of murder. Naval Investigative Service (NIS) agents conducting the interview advised Davis of his rights. Davis waived his rights in writing. During the interview, Davis indicated he might want to consult an attorney. The agents asked Davis if he was requesting a lawyer, and Davis said he was not. Later, Davis unequivocally invoked his right to counsel and questioning was stopped. At general court-martial, Davis moved to suppress his statements. The motion was denied. Davis was convicted of murder and sentenced to life imprisonment and other military punishment. On appeal, the Navy-Marine Corps Court of Military Review upheld the conviction. The United States Supreme Court granted certiorari.