According to Herbert Bix,on the Shanghai fighting of 1932:
Hirohito and the Making of Modern Japan,page 252.At Shanghai, both during and after the fighting, Japanese officers and enlisted men alike exemplified the pathological effects of the post-1905 battlefield doctrine of never surrendering. Captured by the Chinese in February 1932, Captain Kuga Noboru was returned to Japan in a prisoner exchange; he committed suicide to atone for his capture. Praised for his martial spirit by Army Minister Araki, Kuga was later enshrined at Yasukuni. From this time on, officers who survived were openly pressured to commit suicide. A plethora of books, movies, and stage dramas glorified the "human bombs" and "human bullets" who gave their lives on the Shanghai front. These tales heightened the popularity of the army at home, while also reinforcing its mystique abroad.