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Erskine joined his father ’s regiment the 7th Dragoons in 1742 and served in the War of the Austrian Succession , seeing action at the Battle of Fontenoy , then in the 7 Years War .
 organization: Dragoons
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Dragoons 
Answer:
 organization: Dragoons