184439
At the outbreak of the American Civil War , R.W. organized a troop of cavalry for the Confederate States of America of which he was elected captain , a title he was to bear for the rest of his life .
 Confederate States of America
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Confederate States of America