11543
More tactically important was the development of formed units of armored cars , such as the Canadian Automobile Machine Gun Brigade , which was the first fully mechanized unit in the history of the British Army .
 organization: Canadian Automobile Machine Gun Brigade; organization: British Army
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Canadian Automobile Machine Gun Brigade; organization: British Army