Hello and welcome to the forums zooter.
Can you explain what you did to get to 150 NM without leaving Germany? Without more information, the Devs can't make any changes. Clicking on your stack will show the fortification level (it's in the box on the lower right, below the supply and ammo levels). The game changed from the betas we were testing before launch. They changed some of the base parameters (money, conscripts, starting replacements, etc.).
Which patch are you using?
Remember - The beatings will continue until morale improves.