On 26 February 1991, cavalry troops of "Cougar Squadron," the 2nd Squadron of the 2nd Armored Cavalry Regiment, charged out of a sandstorm during Operation Desert Storm and caught Iraq's Republican Guard Corps in the open desert along the North-South grid line of a military map referred to as the "73 Easting." Taken by surprise, the defending Iraqi armor brigade was swept away in salvos of American tank and missile fire in what became the U.S. Army's...