Synonyms for March cannon mouth:

• v.

  •run the gauntlet (verb)
  • take the bull by the horns,
  • be a target,
  • go in harm's way,
  • be a whipping boy,
  • come to grips with,
  • go through fire and water,
  • face one's punishment,
  • take potshots,
  • court disaster,
  • face criticism,
  • take one's life in one's hands,
  • march up to the cannon's mouth,
  • meet head-on.