It is one of the most common surprises in STANAG 6001 preparation: candidates who speak confidently and read well still lose points on Listening. The reason is almost never vocabulary. It is the exam format itself.
Unlike casual listening practice - podcasts you can pause, videos you can replay endlessly - the STANAG 6001 Listening section plays each recording a maximum of two times. Candidates who are used to unlimited replays freeze the first time they hit a recording with no pause button, and by the second play they are anxious rather than focused.
STANAG Listening tests do not sound like everyday conversation. They sound like briefings, SITREPs, checkpoint exchanges, and fire missions - dense with sequence, numbers, call signs, and procedure. A strong general-English listener can still lose the thread when the content is this information-dense and formal.
The single most effective preparation change is simple: stop practising with unlimited replays. Train exclusively with two-play, timed conditions from day one, so the exam format itself stops being the obstacle - and you can focus purely on the language.
STANAG PRO's Listening module enforces exactly this: 100 tests built from military audio scenarios - SITREPs, briefings, checkpoints, fire missions - with a hard two-play limit and speed control, so practice conditions match the real exam exactly.