Template:Are You Sure/January 29

World War I: German soldiers and horses with chemical warfare gas masks passing through a gassed forest (1918).

• ... that Nobel award-winning chemist Fritz Haber greeted World War I with enthusiasm, and that Haber played a major role in the development of the non-ballistic use of chemical warfare in World War I, leading the teams developing chlorine gas and other deadly gases for use in trench warfare, and that Haber was on hand personally when it was first released by the German military at the Second Battle of Ypres?
• ... that mathematician Samuel Eilenberg is responsible for the Eilenberg swindle, a construction applying the telescoping cancellation idea to projective modules?