sentences:  Hata contributed three essays to the series.Roger Dingman described the first, "The Japanese-Soviet Confrontation, 1935–1939", as "a wealth of new data", and praised the second, "The Army's Move into Northern Indochina", for demonstrating "brilliantly how peaceful passage through northern Indochina became forceful occupation".Mark Peattie wrote that Hata's third essay, "The Marco Polo Bridge Incident 1937", was "the best overview we now have in English" of the event, and Hata would later expand it into a full-length book which Edward Drea and Tobe Ryoichi called "the single best source on the incident".