What was the most challenging military school you have ever been to?

Pathfinder. It’s like trying to take a small sip of water from a fire hydrant spraying full force. The instructors went out of their way to explain the course material, but it was still an exercise in sadomasochism trying to remember what was important while discarding all the tertiary information.

My top 3:
1. Ranger School
2. Jumpmaster
3. Career counselor course
SFAS deserves an honorable mention in there. It was like Ranger School compressed into a few weeks.

Ranger School was the hardest thing I had ever done at that point in my life. I had always been told I could never do it. I learned you can continue long after you think you're done.

Jumpmaster was physically grueling because we wore the T11s which are heavy as hell. I felt like I did a 12 mile ruck every day. It was mentally exhausting. You spend all day every day with bloody fingers looking for invisible deficiencies at a near impossible speed.

Career counselor was the most mentally demanding course. You didn't even have to memorize anything, it was all open book. But you had to have laser like attention to detail, and you had to cross reference regulations and think through cases. I was brain dead every day.

Battle Staff, closely followed by support operations phase II and an honorable mention to Airassult school lol