Among other things, Greek bullets found inscriptions like “Got you!” or “Ouch!” In turn, during the war of Rome with allies (90-88 BC), engravings were found on the missiles: “For Pompey’s Backside!” (it is about the famous father Pompey the Great – Pompey Strabon’s Gnaeus) or “Take that!”.
New generation?
https://www.wearethemighty.com/mighty-trending/writing-funny-messages-bomb-ammo/
And it continues up to the present day. There was a Ukraine war fundraiser where you could pay to have a custom message written on munitions.
https://signmyrocket.com/
“Uh oh, you are now afflicted with the ‘Big Sad’ debuff. Please prepare to die, imperialist scum. Slava Ukraini.”
And even before ammo, people would name and/or engrave their swords.
And spears and slingshot bullets and arrows and armor and…
https://imperiumromanum.pl/en/curiosities/messages-on-missiles-to-sling/amp/
War. War never changes.