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The unit did not see action , but Young was believed to have been the first African American to hold the rank of colonel in the United States ( Charles Young was the first black colonel in the regular United States Army ) .
 Young, Charles Young, United States Army
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Young, Charles Young, United States Army