Question: What did the two officer in the Nanking Massacre compete about?
About the article "Nanking Massacre", section "Japanese war crimes on the march to Nanking".

Candidate passages:
Takashi Hoshiyama characterizes opinion in Japan about the Nanking Massacre as "broadly divided into two schools of thought: the massacre affirmation school, which asserts that a large-scale massacre took place, and the massacre denial school, which asserts that, a certain number of isolated aberrations aside, no massacre took place."
Before the 1970s, China did relatively little to draw attention to the Nanking massacre.
In her book "Rape of Nanking" Iris Chang asserted that the politics of the Cold War encouraged Mao to stay relatively silent about Nanking in order to keep a trade relationship with Japan.
In turn, China and Japan occasionally used Nanking as an opportunity to demonize one another. 
When the Nanking Massacre occurred in 1937–1938, Fitch, who was head of the YMCA there, served as director of the International Committee for the Nanking Safety Zone.
He compiled a diary and filmed some of the atrocities committed by the Imperial Japanese Army in Nanking in December 1937.
Writing later in his autobiography, Fitch said, "My story created a sensation in Shanghai, for it was the first news of what had happened in the capital since its evacuation, and it was copied and mimeographed and widely distributed there."
In 1938 Fitch traveled throughout the United States giving talks about the Nanking Massacre and showing films to document it.
In the documentary film Nanking, Fitch was portrayed by actor John Getz. 
Chang spent two years on research for the book.
She found that raw source materials were available in the US, contained in the diaries, films, and photographs of American missionaries, journalists, and military officers who were in Nanjing at the time of the Nanking Massacre.
Additionally, she traveled to Nanjing to interview survivors of the Nanking Massacre and to read Chinese accounts and confessions by Japanese army veterans.
Chang did not, however, conduct research in Japan, and this left her vulnerable to criticisms on how she portrayed modern Japan in the context of how it deals with its World War II past.
Chang's research led her to make what one "San Francisco Chronicle" article called "significant discoveries" on the subject of the Nanking Massacre, in the forms of the diaries of two Westerners that were in Nanjing leading efforts to save lives during the Japanese invasion.
One diary was that of John Rabe, a German Nazi Party member who was the leader of the Nanking Safety Zone, a demilitarized zone in Nanjing that Rabe and other Westerners set up to protect Chinese civilians.
The other diary belonged to Minnie Vautrin, the American missionary who saved the lives of about 10,000 women and children when she provided them with shelter in Ginling College.
The diaries documented the events of the Nanking Massacre from the perspectives of their writers, and provided detailed accounts of atrocities that they saw, as well as information surrounding the circumstances of the Nanking Safety Zone.
Chang dubbed Rabe the "Oskar Schindler of Nanking" and Vautrin the "Anne Frank of Nanking".
Rabe's diary is over 800 pages, and contains one of the most detailed accounts of the Nanking Massacre.
Translated into English, it was published in 1998 by Random House as '.
Vautrin's diary recounts her personal experience and feelings on the Nanking Massacre; in it, an entry reads, "There probably is no crime that has not been committed in this city today."
It was used as source material by Hua-ling Hu for a biography of Vautrin and her role during the Nanking Massacre, entitled '. 
Durdin was in Nanking in 1937 when it fell to the Imperial Japanese Army.
He left Nanking on the on December 15, 1937.
Durdin's report was one of the first printed accounts of the Nanking Massacre.
Although Durdin is often credited as being the first to inform the non-Japanese world about events in occupied Nanking, it was actually Steele who broke the news, bribing a crew member of the Oahu to send his story in.
In what David Askew characterizes as "one of the best journalistic accounts of the fall of Nanking", Durdin reported all the major issues of the Nanking incident: the murder of civilians, the execution of Chinese soldiers, conscription, looting and rape.
"See also the reports of F. Tillman Durdin and Archibald Steele purportedly supporting Nanking Massacre denial."