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In the Norwegian Army during the early part of the 20th century , dragoons served in part as mounted troops , and in part on skis or bicycles ( " hjulryttere " , meaning " wheel-riders " ) .
 Norwegian 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:
 Norwegian Army