In Special Forces, you’re required to maintain a 1 on the Oral Proficiency Interview. That’s about an A2 to low B1 on the CEFR scale—advanced beginner or lower intermediate. After language school, it’s entirely on the individual to maintain or improve. And just like training in the gym, language skills only grow with consistent reps. One month a year in the classroom might help you maintain, but it won’t get you to advanced levels. That said, not everyone stays at 1 . There’s a solid percentage