229019
Promoted to Commander in 1900 and Captain in 1904 , he served as Flag Captain to Admiral Lord Charles Beresford and held posts at the Admiralty as Assistant Director of Naval Intelligence and Assistant Director of Naval Mobilisation .
 Admiral Lord Charles Beresford, Admiralty
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Admiral Lord Charles Beresford, Admiralty