Tillman was a safety on the Arizona Cardinals from 1998-2001, but quit following the Sept. 11 terrorist attacks and enlisted in the Army Rangers. He served in Iraq and Afghanistan from 2002-2004, but was killed in combat during a friendly fire incident in Afghanistan.
Pat Tillman
Villanueva has been an offensive tackle for the Pittsburgh Steelers since 2014. He played collegiately at Army and was deployed three times to Afghanistan while on active duty from 2010-2014 where he was awarded a Bronze Star Medal.
Allejandro Villanueva
Anderson was an NFL running back on the Denver Broncos and Baltimore Ravens from 2000-2007, but before his football career he was in the United States Marine Corps. His time in the Marines actually paved the way for his NFL career.
Mike Anderson
Roger Staubach is known as a two-time Super Bowl champion quarterback of the Dallas Cowboys, but he also served three years in the Navy. Staubach graduated the U.S. Naval Academy in 1965 and volunteered for a one-year tour of duty in Vietnam and was a Supply Corps office until 1967.
Roger Staubach
Cardona is unique as he is both the active Patriots' long snapper and a lieutenant in the Navy Reserves. The 27-year-old has balanced the two jobs by meeting the Navy's minimum requirements, which often consists of time spent at the Naval Preparatory Academy in Rhode Island.
Joe Cardona
Bryce Fisher was drafted by the Buffalo Bills in 1999, but he would have to wait before taking the field. Fisher, a graduate of the Air Force Academy, served two years of active duty in the Air Force and nine more in the reserves. He rejoined the Bills in 2001 while serving in the Air National Guard during his time off.