What techniques did hitler and mussolini use to appear powerful to their listeners?

Hitler and Mussolini both used a number of physical and rhetorical tactics to appear powerful to their listeners.  Both offered, in their aggressive use of body language and booming voices, a certain measure of machismo and confidence when delivering speeches.  Both also appealed to the desires, fears, and needs of their listeners.  Hitler and Mussolini, in addition, used historical examples--however faulty they might have been--to support their assertions.  

several neighboring hills.