Help on level 1 pls

[Von Omar]

Easiest way to get an initial soldiers uniform is to get one from the first 2 soldiers you see after you enter the level.
One patrols between the other one and a tree up the road. Once the patrolling soldier turns around next to the stationary soldier, he begins walking. You have time at that point to rush up to the stationary soldier and chlorophorm him. Then whip out your pistol, or rifle or whatever you want, and kill the patrolling soldier before he turns around. Then change clothes.
You can bypass the first sitting pair of guards but you'll have to deal with a 3 man patrol up the road. A grenade or a sniper rifle from cover work best and nobody will hear anything. Then continue along the road.
This will get you to the area with the truck along the North road. If you hug the canyon wall all the way along the left side of the road, it will bring you to a small bunker, more or less undetected. Once you're there you need to take out 1 guard from behind and move his body slightly behind the bunker to make sure nobody sees the body. He's the only real obstacle. Then sneak inside the bunker and chlorophorm/choke the guy kicking the tire. He's the driver. Change into his uniform and you can take the truck. Watch out for the patrols though since they'll still see you a bit when driving the truck.
From there, just drive into the base. Until you're inside the base there will be nobody to recognize you so have a nice drive.
Good luck. The real fun begins inside the base.