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By the end of March 1941 , 43 RTR had reached its full establishment of 50 tanks and rejoined 25th Army Tank Brigade , now reconverted from the MMG role to train in the infantry tank role on the South Downs .
 25th Army Tank Brigade, South Downs
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 25th Army Tank Brigade, South Downs