 Schwarzkopf's demand to hold the formal cease-fire negotiations in Iraqi territory led to the encounter between the 1st squadron, 4th Cavalry regiment (Quarterhorse) from Ft. Riley, Ks.of the U.S. 1st Infantry Division (Mechanized) and the Iraqi Republican Guard, known in military circles as The Ultimatum.This was detailed in the book Third Graders At War, as well as the book Road to Safwan.