in anger

adverb2

1. •
   With the intent of causing damage or harm to an opponent; in combat, rather than in peacetime training.

   • The Napier of Magdala Battery never fired a shot in anger: it never engaged in combat.
2. •
   In a real situation, rather than only in theory or as part of practice or learning.

   • At that point, Stoley gave up the cause and the Argonauts faded from history, still having yet to kick a ball in anger. — 2012