R. D. Hooker Jr. served in the invasion of Grenada, in the earliest days of the Somalia intervention, as one of the first American responders to the Rwandan genocide, with the first American units to enter both Bosnia and Kosovo, in peace-keeping operations in the Sinai desert, in the Pentagon on 9/11, and again in combat in Iraq and Afghanistan. Rising from private to colonel, he commanded a paratroop company, battalion and brigade and served in the continental US, Latin America, Europe, the Middle East, Africa and Southwest Asia. When not serving with troops, he taught at West Point and served in several high-level Pentagon assignments and in the White House in the administrations of George H.W. Bush, Bill Clinton, George W. Bush and Donald Trump.At the time of his retirement from the military in 2010 the author was the most decorated colonel in the US Army.