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Lt. Colonel Varney recovered from his wound and was made colonel of the regiment on January 10 , 1863 with the retirement of Colonel Charles W. Roberts .
 Varney, Charles W. Roberts
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Varney, Charles W. Roberts