assemble vs call to arms

assemble

verb
  • To put together. 

  • To translate from assembly language to machine code. 

  • To gather as a group. 

call to arms

noun
  • An appeal to fight or to engage in conflict. 

  • An appeal to undertake a particular course of action or to support a specific cause; a call to action. 

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