What is the hardest training course?

Question

I would like if you guys listed it in order from hardest to easiest; Im looking into military programs and I felt if I knew how hard a training course is for a branch or role is it would effect my decisons.

Here the ones for the list
Cop
Swat
Marines
US Army
Airforce
Navy
CIA [Protective Agent]
CIA [Police Officer]

Answer 1

The longest hardest military course in the world is the Royal Marines Commando Course

http://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&ved=0CDYQFjAB&url=http%3A%2F%2Fde.answers.yahoo.com%2Fquestion%2Findex%3Fqid%3D20100428022202AAjajTG&ei=gfLjUbT7KKT_4QSoh4CYDA&usg=AFQjCNEoVczcxOIjO-zhWi5DIsnmaaB8Ug&bvm=bv.48705608,d.bGE



http://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CC8QFjAA&url=http%3A%2F%2Fen.wikipedia.org%2Fwiki%2FRoyal_Marines_selection_and_training&ei=gfLjUbT7KKT_4QSoh4CYDA&usg=AFQjCNFrma5c5O-nBWFOhEBOHCdL0F7NPA&bvm=bv.48705608,d.bGE



http://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=6&cad=rja&ved=0CFIQFjAF&url=http%3A%2F%2Fwww.burnleyexpress.net%2Fnews%2Flocal%2Fburnley-marine-earns-coveted-green-beret-1-4826929&ei=oPnjUYaANrDS4QSIjIHICw&usg=AFQjCNHTujYiZK7OUlp0gdHQUl43CmSpbQ&bvm=bv.48705608,d.bGE



http://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=4&ved=0CFoQtwIwAw&url=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DHOoUJWso9os&ei=wFwfUJeqIIn74QSrvIDgAQ&usg=AFQjCNGBpTJvnt4m90ArX3l4gZoGFyv1Fg

Answer 2

United States Marine Corps

Answer 3

MARINES FORCE RECON!