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William Ludgate ( March 11 , 1836 – June 14 , 1912 ) was a Captain in the Union Army and a Medal of Honor recipient for his actions in the American Civil War .
 Ludgate, Union 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:
 Ludgate, Union Army