17 Nov 1931

China
  • Japanese troops attacked Qiqihar, Nenjiang Province, China. Chinese troops, out-gunned, attempted to hold defensive lines against Japanese artillery bombardment and cavalry charges. ww2dbase [Battle of Qiqihar | Qiqihar, Nenjiang | CPC]
18 Nov 1931

China
19 Nov 1931

Photo(s) dated 19 Nov 1931
Japanese troops marching into Qiqihar, Nenjiang Province, China, 19 Nov 1931, photo 1 of 2Japanese troops marching into Qiqihar, Nenjiang Province, China, 19 Nov 1931, photo 2 of 2
1 Aug 1939

China
  • Colonel Katsumura Fukujirou was named the commanding officer of Japanese Unit 516 chemical weapons research unit based in Qiqihar, Nenjiang Province, China. ww2dbase [Qiqihar, Nenjiang | CPC]
1 Nov 1939

China
  • Colonel Oyanazu Masao was named the commanding officer of Japanese Unit 516 chemical weapons research unit based in Qiqihar, Nenjiang Province, China, replacing Colonel Katsumura Fukujirou. ww2dbase [Qiqihar, Nenjiang | CPC]
2 Dec 1940

China
  • Colonel Seiichi Miyamoto was named the commanding officer of Japanese Unit 516 chemical weapons research unit based in Qiqihar, Nenjiang Province, China, replacing Colonel Oyanazu Masao. ww2dbase [Qiqihar, Nenjiang | CPC]
18 Jan 1943

China
  • Major General Yamawaki Masao was named the commanding officer of Japanese Unit 516 chemical weapons research unit based in Qiqihar, Nenjiang Province, China, replacing Colonel Seiichi Miyamoto. ww2dbase [Qiqihar, Nenjiang | CPC]
20 Jun 1944

China
  • Major General Kanemasa Akiyama was named the commanding officer of Japanese Unit 516 chemical weapons research unit based in Qiqihar, Nenjiang Province, China, replacing Major General Yamawaki Masao. ww2dbase [Kanemasa Akiyama | Qiqihar, Nenjiang | CPC]
12 Aug 1945

China
  • A Japanese Unit 516 chemical weapons research unit crew, supervised by Masaji Takahashi, disposed of several truck loads of mustard gas, lewisite, and other chemical weapons material into the Nen River in Qiqihar, Nenjiang Province, China. ww2dbase [Qiqihar, Nenjiang | CPC]

Timeline Section Founder: Thomas Houlihan
Contributors: Alan Chanter, C. Peter Chen, Thomas Houlihan, Hugh Martyr, David Stubblebine
Special Thanks: Rory Curtis




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Song Ziwen and his wife Zhang Leyi greeting dignitaries at the Colonial Room of the St. Francis Hotel, San Francisco, California, United States, 1 Jun 1945, photo 2 of 2


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