What Cardinal player was killed in the War on Terror in 2004?

The Cardinal player killed in the War on Terror in 2004 was Pat Tillman.\n\nTillman was an Arizona Cardinals safety who left his NFL career after the September 11, 2001, attacks and enlisted in the U.S. Army with his brother Kevin in 2002. He served in Iraq before being deployed to Afghanistan with the Army Rangers.\n\nOn April 22, 2004, Tillman was killed in Afghanistan during a confused firefight. The military initially reported that enemy forces had killed him, but later investigations determined that he had been shot by fellow American soldiers in a friendly-fire incident. The delayed disclosure of that fact caused intense scrutiny and controversy.\n\nTillman was posthumously promoted to corporal and received the Silver Star and Purple Heart. He remains one of the most recognizable former professional athletes associated with military service. A common mix-up is Bob Kalsu, a Buffalo Bills player killed in Vietnam in 1970; Kalsu was another NFL player who died in wartime, but he was not the Cardinal in this question. The Cardinals retired Tillman’s No. 40 and inducted him into their Ring of Honor.