In line 13-20 to what natural phenomenon is the american army compared

Tempests and storms. A tempest is a type of violent and windy storm. Wheatley uses the repetition of the word storm, to clarify and reinforce the idea that the American Army under the leadership of George Washington is one of a brutal, unstoppable physical force. The image brought about by the idea of a tempest is a completely uncontrollable and menacing force.

Speech, Some types of nonverbal communication would be writing, body language, and hand gestures such as sign language, all of which are used without speaking.