RT Book, Section A1 Suchard, Jeffrey R. A2 Nelson, Lewis S. A2 Howland, Mary Ann A2 Lewin, Neal A. A2 Smith, Silas W. A2 Goldfrank, Lewis R. A2 Hoffman, Robert S. SR Print(0) ID 1163020988 T1 Chemical Weapons T2 Goldfrank's Toxicologic Emergencies, 11e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9781259859618 LK accessemergencymedicine.mhmedical.com/content.aspx?aid=1163020988 RD 2024/04/16 AB The first well-documented intentional use of chemicals as weapons occurred in 423 B.C. when Spartans besieging Athenian cities burned pitch-soaked wood and brimstone to produce sulfurous clouds.88 Large-scale chemical warfare began in World War I when the Germans released chlorine near Ypres, Belgium, killing hundreds of people and forcing 15,000 troops to retreat.19,48 Both sides rapidly escalated the use of toxic gases released from cylinders or by artillery shells, including various pulmonary irritants, lacrimators, arsenicals, and cyanides.