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On 19 February 1766 , he was promoted again , to General-major , and on 19 January 1771 , he was promoted to Feldmarschall-Leutnant , effective 25 February 1767 .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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