Grunt Speak
Trial by Fire
Definition
Similar to baptism by fire, but with the added flavor of being publicly evaluated while you're figuring it out. Sink or swim with an audience. Popular with new platoon leaders, FNGs on their first deployment, and anyone whose sponsor unit forgot to pick them up from the airport.
Example Usage
"New LT showed up Monday. By Friday he was running a convoy brief. Full trial by fire. Surprisingly, he only said one thing wrong."