acknowledge vs present arms

acknowledge

verb
  • To own or recognize in a particular quality, character or relationship; to admit the claims or authority of; to give recognition to. 

  • To own as genuine or valid; to assent to (a legal instrument) to give it validity; to avow or admit in legal form. 

  • To be grateful of (e.g. a benefit or a favour) 

  • To admit the knowledge of; to recognize as a fact or truth; to declare one's belief in 

  • To report (the receipt of a message to its sender). 

present arms

verb
  • To adopt such a position. 

noun
  • A position of salute in the manual of arms in which the gun is held in both hands vertically in front of the body, with the muzzle upward and the trigger side forward. 

How often have the words acknowledge and present arms occurred in a corpus of books? (source: Google Ngram Viewer )