What was the main function of George Creel's four minute man?

The main function of George Creel's Four Minute Men was to deliver brief, persuasive speeches in support of the U.S. government's war efforts during World War I. These volunteers spoke in public venues, such as movie theaters and community gatherings, to inform and rally public opinion, promote war bonds, and encourage enlistment. By utilizing a network of speakers, the initiative aimed to maintain morale and foster a sense of patriotism among the American populace.