at each other's throats vs martial

at each other's throats

prep
  • In mutual conflict. 

martial

adj
  • Connected with or relating to armed forces or the profession of arms or military life. 

  • Characteristic of or befitting a warrior; having a military bearing; soldierly. 

  • Of, relating to, or suggestive of war; warlike. 

How often have the words at each other's throats and martial occurred in a corpus of books? (source: Google Ngram Viewer )