What the Army has to does not apply. They are speaking in general terms, I am speaking in specifics.

I hike with a large diverse sample and have seen a lot of people go to elevation (11,500'+) for the first time. Generally, we are at 8,000' to 10,000' 15 hrs. + before going higher. I have seen people who don't have any problems in SoCal's Traverse Ranges, get debilitated in the Sierra with and without the aid of drugs.

You can't just take Diamox willy-nilly. Everyone has to find a dosing that works...and it ain't always what's commonly recommended.