Unfortunately the topic was locked before I could join the discussion.
It is certainly sad when moderators freak out and lock the thread before an informed response can be made.
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Short overview of the following sources:
1) Rajskij N. S., "Pol'sko sovetskaja vojna 1919-1920 godov i sud'ba vojennoplennykh, internirovannykh, zalozhnikov i bezhentsev", Moscow, 1999.
2) Karpus, Z, "Plenniki zabytoj vojny",
http://www.ng.ru/ideas/2000-10-19/8_war.html3) Dajnes, V. O., "Rossija- Pol'sha. Rabota nad oshibkami",
http://www.ng.ru/ideas/2000-11-03/8_poland-ru.html4) Mikhutina I. V., "Tak byla li "oshibka"?",
http://www.ng.ru/polemics/2001-01-13/8_error.htmlAccording to [1], estimates of the number of the Red Army POWs are as follows:
Karpus - 110,000
Mikhutina - 165,550
Chicherin's note - 130,000.
In Rajskij's opinion the figure is at least 150,000.
As for Russian and Ukrainian POWs, from 150,000 only 80,000 returned home. About 60,000 died in camps and prisons from diseases and inhumane conditions.
The number corresponds to Chicherin's note of September 9, 1921. At least 22,000 of them died in Tuchola camp, according to I. Matushevskij, the head of the II section of the Main HQ of the Polish army.
Rajskij doesn't accept the figure of 80,000 victims since some of the soldiers were recruited into the White army.
According to [2], there were 110,000 POWs, but this number is "theoretical", since about 25,000 joined the anti-Bolshevik forces. Therefore in the autumn of 1920 there were no more than 80-85,000 of the Red Army POWs. Karpus says that the country was not ready for such a number of POWs and that is the cause of the increased mortality. 65,797 POWs returned home. Thus, about 16-18,000 died while in Polish captivity (8,000 in Strzalkow(sp?), 2,000 in Tuchola, 6-8,000 in all other camps. 60,000 victims are out of question.
POWs were in Tuchola from the end of August, 1920 to the middle of September, 1921. The mortality of 2000 per month would, without doubt, leave traces in the camp documents, press reports, etc. No more than 1950 POWs died in Tuchola in one year.
According to [3], both I. Mikhutina and Z. Karpus erred in their statistics. Dajnes argues that even according to Mikhutina's data there would be no more than 160,550 POWs. Karpus is wrong because his number of the dead in Tuchola is significantly lower than the number given by the Main HQ of the Polish army. Chicherin's figures are more reliable.
According to Polish historians, 65,797 POWs returned until the end of October 1921, according to the Mobilization HQ of the RKKA - 75,699 until the end of November 1921. The latter figure is more reliable. 64,000 died in Polish captivity. The conditions in the Polish camps were insufferable (he refers to the report of the American Union of the Christian Youth).
In [4], Mikhutina argues both with [2] and [3]. She gives a breakdown list of her sources for her number and argues that Dajnes is wrong in accusing her of making an error. According to her, there were 165,550 POWs (or, if one is to take only the minimum figures, 133,000). Mikhutina argues with Karpus concerning his claim that in November 1919 there were only 7096 Red Army POWs in all camps, She says that it may be so, but still 30-35,000 (the figure given by prime-minister Paderewski on Sept. 15, 1919) should be accounted for. She argues that the Polish documents indicate a very high mortality. She also argues that evidence indicates that a large part of the POWs might have been killed on the spot. She argues that the official sources are incomplete.