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.