32014
The 1st Maryland Infantry , Potomac Home Brigade was an infantry regiment that served in the Union Army during the American Civil War .
 1st Maryland, Potomac Home Brigade, 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:
 1st Maryland, Potomac Home Brigade, Union Army