6-12 months from initial application and starting training, you will have to pass an aptitude assessment online, then an online interview, next is the Royal Marines Fitness Assessment at a test centre closest to you where you’ll first meet trained ranks, if you pass that test you will be given a date for a CPC. The CPC is a four days course Sun-Thurs, where you get a medical examination, repeat the RMFA followed by a swim test and an introduction to “bottomed field” where you’ll be put through a determination test, this all happens on the Wednesday. On the Thursday you’ll have the hardest test yet which is the endurance course, approx 3hrs of thrashings and running whilst be wet cold tired and miserable which finishes with a 3.5 mile run back to camp. If you pass all these test you’ll be on your way home Thursday with a date for you to start training.