Talk:Prizren incident (1999)

What's the meaning of "shooting a tank gun" in anger?
The article cites a source about "the first time that a Leopard 2 fired its 120 mm smoothbore gun in anger." What is the meaning of shooting "in anger" in this context? Is this some kind of military jargon? Plex (talk) 14:42, 23 March 2023 (UTC)