A typical example:
RCT Roberts on joining was 4ft 9ins and weighed 60 kg, after Kings Squad pass out Marine Roberts was 7ft 2ins and now weighed 97kg.He could also bench press two to three tanks and could do as many press ups in a minute as he wanted, just ask and he could do them.
He could also eat metal, drink petrol and breath fire out of his arse. Others develop different various skills, but they are too top secret to mention, as Artist mentioned some have to be caged.
Facts are that at the start of RT there will be around fifty odd RCT's of all different shapes and sizes. Some 32 weeks later they will still be different shapes and sizes, however there will be far less of them, and now they will all have one thing in common, their Green Lids and Commando Flash's. They will all have changed physically in some way over the course of it, some not much, some alot, but it doesnt matter, as mentioned above its what they now have between their ears that matters.