cannot get further than the court yard without being shot what am i doing wrong!!!!????

Put your weapon on your back, WALK (most impoortant), and walk in a straight line to the commander's office (in the collonnade, just opposite the door you leave. Don't pick any locks...either that, or your uniform has a gun-wound mark on it, in which case, you'll have to retake the preceeding mission and try not to get the driver shot before you get his uniform.