Way back in my younger days (early 80s), I went through Infantry School ph 2-3-4. Ph 3 is probably the toughest training I've had in all my career. It teaches you dismounted platoon tactics - which means we spent a marvelous summer marching up and down the Lawfield corridor in Gagetown practicing the platoon in the attack during the day (when we weren't digging yet another defensive position), and the platoon in patrol operations during the night. Typically, on a week long field training exercise, you'd be lucky to get an hour or two uninterrupted and highly uncomfortable sleep per night. My platoon started with 38 candidates. 16 graduated. I'm sure there is training out there that's tougher, but ph3 infantry is pretty hard to beat when it comes to common (as opposed to special-type) training. To top it off, our course officer had just graduated the US Army Ranger course, so you can figure what his mind-set was when he took over our training platoon. Good luck. Get in shape, work on developing your stamina and above all, work on that masochistic attitude ;D Yes, sir, thank you, sir, and can I have another night patrol, sir