is "total immersion" still the name of that method? where you learn target language basics during the first and only bilingual week, and then you force yourself to only use the target language with the help of a printed booklet?
I don't know what the name is, but that is essentially it. Though bilingual week doesn't seem quite right - the very first day the military puts you in a history class taught in the language with no local language allowed for an hour. And you still get to use your first language in the latter weeks when you need to - though they push you to not most of the time.
Remember that first week is 20-30 hours of classroom time plus homework. That by the time you are done with that first week you already have most of a semester of regular classroom behind you.