On US bombing of Kampuchea
Over the next fourteen months 3,630 B-52 raids were flown against suspected Communist bases along different areas of Cambodia's border. Breakfast was followed by "Lunch," Lunch by "Snack," Snack by "Dinner," Dinner by "Dessert," Dessert by "Supper," as the program expanded to cover one "sanctuary" after another. Collectively, the operation was known as "Menu."
Shawcross, William, Sideshow: Kissinger, Nixon and the Destruction of Cambodia, pp. 28. New York: Simon & Schuster, 1979.
The White House ignored its agreement with Congress that the intensity of the bombing during the last forty-five days not be increased. In June, 5,064 tactical sorties were flown over Cambodia; in July this was raised to 5,818; and in the first half of August, 3,072 raids were flown. In those forty-five days, the tactical bombing increased by 21 percent. The B-52 bombing also increased, though those planes were already almost fully committed. By August 15, when the last American planes dropped their cargoes, the total tonnage dropped since Operation Breakfast was 539,129. Almost half of these bombs, 257,465 tons, had fallen in the last six months. (During the Second World War 160,000 tons were dropped on Japan.) On Air Force maps Cambodia thousands of square miles of densely populated, fertile areas were marked black from inundation.
Ibid., pp. 296-7.