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From July 1944 onward, accused Nishi was at the same time Chief of the so-called
Training and Education Division of Detachment 731, and supervised the training of personnel
for special units intended for bacteriological warfare.

Accused Nishi himself took part in criminal and inhuman experiments on living people.

In 1945, when the Soviet forces were drawing near, accused Nishi, in order to obliterate
the traces of his criminal activity, destroyed by fire all the service premises and documents of
Branch 673, which he directed. (Vol. 7, pp. 108 and 112-15).

6. Karasawa Tomio, who from 1943 to 1945 headed a section of the Production Division
of Detachment 731, was one of the active organizers of the mass production of
bacteriological weapons.

In 1940-42, accused Karasawa took an active part in supplying bacteria to the special
expeditions sent by Detachmenf 731 to Central China for the purpose of employing
bacteriological weapons in military operations.

In 1943-44, accused Karasawa took a direct part in criminal experiments in which lethal
bacteria were tested on prisoners. (Vol. 4, pp. 158 and 162-65.)

7. Onoue Masao, who from October 1943 to 1945 was Chief of Branch 643 of Detachment
731, directly supervised diverse research work on the bacteriological weapons most effective
for military use and on methods of producing them on a mass scale.

"... I knew," accused Onoue testified, "that Detachment 731 was conducting research on,
and mass production of, bacteria for use in bacteriological warfare against the Soviet Union. .
. .

"Branch 643, which was under my charge, bred rodents and plague-carrying fleas, which
were consigned to Detachment 731, where they were used for the manufacture of
bacteriological weapons." (Vol. 8, p. 102.) Under the direction of accused Onoue, the
branch's Training Division systematically trained special personnel for bacteriological
warfare.

In 1945, with the object of covering up the crimes in the sphere of preparation for
bacteriological warfare, accused Onoue destroyed the equipment and all the documents of the
branch. (Vol. 8, pp. 98 and 102-04.)

8. Sato Shunji was from 1941 to 1943 Chief of the Nami and Ei detachments, and from
1944 onward, as Chief of the Medical Service of the 5th Army, which formed part of the
Japanese Kwantung Army, he supervised the activities of Branch 643 of Detachment 731.

As Chief of the Nami and Ei detachments, accused Sato took an active part in research on,
and production of, bacteriological weapons.

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