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To help protect McClellan's beleaguered army whose very existence was threatened U.S. Secretary of the  Navy   Gideon Welles  ordered a dozen of the schooners to leave the Mississippi River and to sail north to reinforce the James River Flotilla which was protecting McClellan's flanks and keeping Lee's victorious troops at bay .
 employee of: Navy, Gideon Welles
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
 Entity Pairs:  Navy, Gideon Welles 
Answer:
 employee of: Navy, Gideon Welles