Seems the military has a good system, but I think they screen those who go to the school. My wife’s sister’s husband was Lt in the Navy. We went to Monterrey to visit. He was in arabic class first day and was trying to read a paper from the middle east. First day assignment. The whole class was in arabic, no english.
He must have had a knack for languages because he was fluent in Vietnamese reading and writing. In the war they put him and his family in a house in Manila and flew him to Saigon every Monday morning. He translated docs.r He did see an “interrogater” take two NV up in a chopper and they pushed one guy out The seocond guy decided to talk.
He beat up my sister-in-law and don’t know where he went from Monterrey. But the school then was total immersion and they started with people with apptitude.
I had a Russian classmate whose son recently went to the Chinese course out in Monterrey. Unfortunately, he washed out. Just wasn’t his cup of tea. He did get a sweet gig doing something technical so it wasn’t all a loss.