I am guessing Cameron15 was in Cadets as he is only 14 and has two years experience. I too noticed that drill differs from my old Cadet Squadron to the military, lots of Cadet Corps/Squadrons teach drill differently, not really sure how or why, but it happens.
In my Squadron, when would stand easy the count would be 1-2-3-1, but we would fold out hands left over right and have them rest on our lower stomach/belt line. There are a bunch of other little details, that are so insignificant I can't even remember. But the Army is teaching me the proper way, and it takes a little getting used to and I'm happy to learn it the right way.