Question: Where Men Win Glory is a biography of which football player who enlisted in the US Army?

Context paragraphs:
Richard T. Davis: Specialist Richard T. Davis (March 14, 1978 – July 15, 2003) was an Infantryman in the United States Army.  The son of two US Army veterans, Lanny and Remy Davis, he was born on an Army base in Germany.  Davis enlisted in the Army in 1998 and served in Operation Joint Forge in Bosnia and later in the Iraq War, where he and his comrades participated in the April 11, 2003, "Midtown Massacre," a five-hour firefight in downtown Baghdad.  On July 15, 2003, less than two days after returning from deployment to Iraq, Davis was murdered outside Fort Benning, Georgia by a fellow soldier from Baker Company, Alberto Martinez.  Three other soldiers were also present and involved in the events that led up to the killing and followed the killing.

Ralph Lee Bowerman: Master Sergeant Ralph Lee Bowerman (US Army, retired), (August 14, 1934 in Red Deer, Alberta, Canada – October 19, 2015), was a composer, songwriter, musician and entertainer.  A saxophone player since childhood, Ralph Bowerman is best known for winning the US Army Bicentennial Army hymn competition on June 14, 1975, and for the memorial service at Arlington National Cemetery, during which SFC Ralph Lee Bowerman's composition "Mighty Is Our Army,"

Pat Tillman: Patrick Daniel Tillman (November 6, 1976 – April 22, 2004) was a professional American football player in the National Football League (NFL) who left his sports career and enlisted in the United States Army in June 2002 in the aftermath of the September 11 attacks.  His service in Iraq and Afghanistan, and subsequent death, were the subject of much media attention.

Where Men Win Glory: Where Men Win Glory: The Odyssey of Pat Tillman, a 2009 book written by Jon Krakauer, is a biography of Pat Tillman, an American football player who left his professional career and enlisted in the United States Army after the September 11 attacks.  To write the book, Krakauer drew heavily upon Tillman's journals, interviews with the Tillman family, "Boots On the Ground by Dusk: My Tribute to Pat Tillman" by Mary Tillman, and extensive research on the ground in Afghanistan.

Camp Wheeler: Camp Wheeler was a United States Army base near Macon, Georgia.  The camp was a staging location for many US Army units during World War I and World War II.  It was named for Joseph Wheeler, a general in the Confederate States of America's Army.The War Department used the site area of Camp Wheeler as a mobilization center from 1917 to 1918.  It was established on July 18, 1917 as a temporary training camp for National Guard units in federal service and consisted primarily of tents in a cantonment area for the 29,000 officers and enlisted men.  The military closed the first Camp Wheeler on April 10, 1919.

Samuel Allen (baseball): Samuel Allen is a former baseball player for the Negro Leagues. Allen was born in 1936 in Norfolk, Virginia.  During his high school years he was a baseball and football player.  In 1957, he played for the Kansas City Monarchs.  In 1957, he would lead the league in runs scored.  In 1958, he played for the Raleigh Tigers.  In 1959, he played for the Memphis Red Sox.  He was drafted into the US Army in 1960.  For a period he was with the Army 82nd Airborne.  In 2003, he was elected into the African American Hall of Fame.

Squad leader: In the US military, a squad leader or squad commander is a Non-Commissioned Officer who leads a squad of typically 9 Soldiers (US Army: squad leader and two fireteams of 4 men each) or 13 Marines (US Marine Corps: squad leader and three fireteams of 4 men each) in a rifle squad, or 3 to 8 men in a crew-served weapons squad.  In the United States Army the Table of Organization and Equipment (TO&E) rank of a rifle squad leader is Staff Sergeant (US military & naval pay grade E-6 or NATO designation OR-6) and in the United States Marine Corps the TO rank is Sergeant (E-5 or OR-5), though a Corporal may also act as a squad leader in the absence of sufficient numbers of Sergeants.  Squad leaders of crew-served weapons squads range from Corporal through Staff Sergeant, depending upon the branch of service and type of squad.

81st Armor Regiment: The 81st Armor Regiment currently has two active battalions, the 1st and 3rd, both of which are assigned to the 194th Armor Brigade, US Army Armor Center, Fort Benning, GA.  They are responsible for training enlisted armor crewmen for the US Army and US Marines on armored warfare vehicles such as the M1A1/M1A2 and Stryker platform.

Lavor Postell: Andre Lavor Postell (born February 26, 1978) is an American former professional basketball player.  Following a college career at St. John's University, he was selected by the New York Knicks in the second round of the 2000 NBA Draft.  He played three seasons with the Knicks showing promise when Allan Houston and Latrell Sprewell were sidelined by injuries.  At the age of 35, he enlisted in the US Army.  

Dremiel Byers: Dremiel Byers (born September 11, 1974) is an amateur wrestler in the Greco-Roman discipline from the United States, Byers went to high school in Kings Mountain, North Carolina where he won a state championship in 1993.  He decided to attend North Carolina A&T on a football scholarship to study Animal Science.  After giving up his scholarship he signed a 2-year enlistment for the US Army.  He joined the World Class Athletes Program (WCAP) in 1996, where he still plays a major role.  Byers is a Sergeant First Class in the US Army.

Supporting paragraphs: Where Men Win Glory Pat Tillman
Answer: Patrick Daniel Tillman