- A soldier's very first experience of real combat circumstances.
- A severe ordeal experienced for the first time.
- the very first connection with a severe experience, specifically an initial connection with military combat
- A soldier's first connection with real fight conditions.
- A severe experience experienced the very first time.
- initial experience of a severe ordeal, especially a first connection with military combat
Sentence for "baptism of fire"
- johnny thought he was bisexual, until…
Urban Dictionary for "baptism of fire"
- when someone has actually rectal intercourse…