Scout's honor vs truly

Scout's honor

noun

  • The oath taken by Boy Scouts or Girl Scouts. 

intj

  • Any promise or oath. 

truly

adv

  • In accordance with the facts; truthfully, accurately. 

  • Honestly, genuinely, in fact, really. 

  • Very. 

How often have the words Scout's honor and truly occurred in a corpus of books? (source: Google Ngram Viewer )