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Military career Boer War Colston was commissioned into the Grenadier Guards in 1900 , and served with the 2nd Battalion in the Second Boer War 1901 – 02 , during which he was wounded .
 Colston, Grenadier Guards, 2nd
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Colston, Grenadier Guards, 2nd