With the exception of a mandatory MOPP gear A3 bag that stayed in camp or staging areas I carried all my goodies in a then new ruck we had called a CFP90. Worked very well. Even with extream weight loadouts of team gear and personal existance loads.
Troops in Iraq right now are getting a lesson in tough IMO. Hopefully they will learn from it and improve physically, mentally and material wise........oooops .....back to that after action report that is never read.......:o)
Stay Safe !