17 Nov 1931
China
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
China
- Chinese troops under General Ma Zhanshan withdrew from Qiqihar, Nenjiang Province, China. ww2dbase [Battle of Qiqihar | Qiqihar, Nenjiang | CPC]
19 Nov 1931
Photo(s) dated 19 Nov 1931
Photo(s) dated 19 Nov 1931
1 Aug 1939
China
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
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
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
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
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
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]
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