Seen it before. One of the most professional tank commanders I've ever known had his career destroyed for taking his wife's muscle relaxers for a bad back right before a surprise piss test. Maybe not a great idea, but tanking beats people up, and we were rolling into gunnery. Next to combat, gunnery is what tankers do. It's not something to be missed. Guy was everything a soldier should strive to be. Fast tracking to E7 like crazy. One if those guys that deserved to be at the top. He was almost chaptered out, but ended up with a reduction to Sgt and little hope of moving forward.
At the same time this was going on, we had a total shitbag trying his damndest to get out. hot on multiple piss tests. Cocaine. Pills. Was rolling joints out of bible pages in his room. Went on 24 hour suicide watch. No boot laces and had to be escorted everywhere. Wouldn't get into uniform, and they wouldn't put him out. Just busted him down and kept him on constant extra duty. Went on for a year at least. We would see him walking around with his little shiteating smirk I always wanted to slap off of him,
Welcome to the military.