Deletion of Sgt. MacKenzie

Comment: meets GNG.  It is discussed in https://books.google.co.uk/books?id=chdoyjfTQ2IC&pg=PA114&dq=%22Sgt.+MacKenzie%22 ''Music in American Combat Films: A Critical Study'' on the linked page and several other pages starting on page 108.  Also substantial coverage in https://books.google.co.uk/books?id=8Qa7DQAAQBAJ&pg=PA158 ''Hymns for the Fallen: Combat Movie Music and Sound After Vietnam'' and a few sentences in https://books.google.co.uk/books?id=1T8EAQAAQBAJ&pg=PA211 ''The Martial Imagination: Cultural Aspects of American Warfare''.  Not much in the way of  going on with this nomination
Stance: keep
Cited policy: Wikipedia:Articles for deletion (WP:BEFORE)