How to Build a Fascist Society
First you should bring everything under the direct control of one agency. Give this agency a cool name like "Ministry of Fatherland Security." Don't forget to start a program to have people spy on eachother and look for possible threats to your new order. The East German's had the Stasi. Check theirs out. You may find some inspiration. Then take the military, which already reports to the federal government and give them more power. Declaring martial law will go over much easier if the army has already been involved in arrests, search and seizures, etc.