Col. Douglas MacGregor, U.S. Army, Desert Storm

Douglas MacGregor was commissioned as a U.S. Army officer after graduating from West Point in 1976. He soon developed expertise in armored cavalry and tanks that proved extremely valuable in the short, decisive ground campaign during Operation Desert Storm.

In this edition of "Veterans Chronicles," Col. MacGregor tells the story of how he turned an underperforming armored cavalry squadron into one of the most effective fighting units of the Gulf War. He also discusses his book, "Margin of Victory," and the five battles of the 20th century that drastically changed modern warfare.