Talk:Born in Battle/@comment-86.71.58.107-20181126231140

It would appear that if you defeat several monsters with a single attack (with Blast or Carve a Path for example), you recover 1 Heart and 1 Fatigue per monster killed. Otherwise, it would be written "Each time you defeat monsters".

Source: https://community.fantasyflightgames.com/topic/92045-the-meaning-of-each-time/?do=findComment&comment=891104