garrison vs supply depot

garrison

noun
  • The troops stationed at such a post. 

  • A permanent military post. 

  • Occupants. 

  • A military unit, nominally headed by a colonel, equivalent to a USAF support wing, or an army regiment. 

verb
  • To convert into a military fort. 

  • To occupy with troops. 

  • To assign troops to a military post. 

supply depot

noun
  • A facility utilized by armies to store battlefield supplies temporarily on or near the front lines until they can be distributed to army units. 

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