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His educational labours were interrupted twice , when he acted as military chaplain to the Tyrolese troops during the Italian campaign ( 1866 ) , and to German volunteers in the papal army ( 1869 – 70 ) .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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