據柏葉勇一1954年7月-8月筆供，他1890年出生，日本廣島縣人。1932年到中國東北參加侵華戰爭，曾任海倫憲兵分遣隊長、偽滿洲國撫順市警察局局長等職。

  柏葉勇一

重要罪行有：

1941年9月，在撫順期間，命令所屬警察追捕老虎臺采煤所250名逃亡的俘虜工人，包圍后，“用手槍射殺一部分，逮捕大部分”。

在撫順，命令所屬警察“每年一次或兩次在市內”“抓乞丐，共逮捕200名至300名(此數字1954年8月1日筆供更正為‘50名’)，乘汽車放棄于興京縣的山中”，致“其中一部分因身體衰弱而死亡”。

1942年9月，親自布置在撫順煤礦“傳染病發生地區的隔離特別警戒”，“隔離宿舍97名，死亡者54名”。其中的“永安臺25號地區隔離所，因隔離者的供給不良，身體很衰弱，很多人被扔進修理工場的鐵礦爐燒死”。

According to the written confession of Yuichi Kashiwaba from July to August 1954, he was born in Hiroshima Prefecture, Japan in 1890. In 1932, he went to northeast China to join the War of Aggression against China and served successively as detachment captain of Hailun Military Police and director-general of Police Department in Fushun City of the "Manchukuo".

Confessions of Japanese war criminal Yuichi Kashiwaba File photo of Yuichi Kashiwaba Major offences:

September 1941: while in Fushun, ordered the subordinate policemen to trace the 250 prisoner-laborers who fled Laohutai Coal Mine, after encircling the laborers, "shot some dead with handguns and arrested most of them";

In Fushun, ordered the subordinate policemen to "arrest a total of about 200 to 300 (in his confession written on 1 August 1954, the figure was changed to 50) beggars" "inside the city once or twice a year"; "beggars were sent to the mountains in Xingjing County by car" causing "some of them to die of poor health conditions";

September 1942: personally arranged for the "special isolation alert for epidemic areas" in Fushun Coal Mine, "97 people were isolated in the dormitory and 54 died"; "In Yongantai No.25 Isolation Station, there were no adequate supplies and the people in isolation were in poor health, and many of them were thrown into the iron ore furnace in the repair workshop and burnt to death."