martial vs military

martial

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

  • 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. 

military

adj
  • Relating to war. 

  • Relating to armies or ground forces. 

  • Characteristic of members of the armed forces. 

  • Relating to armed forces such as the army, marines, navy and air force (often as distinguished from civilians or police forces). 

noun
  • Armed forces. 

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