Jack Canard spent six months as a company commander with the 7th Engineer Battalion, 1st Brigade, 5th Infantry Division (Mechanized), then six months as the brigade engineer with the 326th Engineer Battalion, and lastly as the division staff engineer with the 101st Airborne Division. He discusses the work of combat engineers in a war zone, including mine clearing activities, civic action projects in the villages, bridgebuilding, and road construction. He remembers building a bunker out of bridge-building materials that was so secure B-52s were later unable to destroy it after the evacuation from Vietnam. He also describes the destruction of tunnel complexes with a combat engineer vehicle, which was an “M60 tank with a dozer blade on it” and a gun that “shot a demolition shape-charge that was the size of a 155-millimeter round.” And he recounts the story of how he and two enlisted men earned the Army Soldier’s Medal for Heroism after an ammunitions dump was hit by a rocket and exploded at Camp Eagle.