A Washington Subpoena to Appear and Testify at a Hearing or Trial in a Civil Action is a court-ordered command that requires an individual to be present in court for a hearing or trial. This type of subpoena is served by the court or a party's attorney to a witness or other person who is believed to have information relevant to a civil case. The subpoena requires the recipient to appear in court to give testimony or provide documents and other evidence related to the case. There are two types of Washington Subpoena to Appear and Testify at a Hearing or Trial in a Civil Action: Subpoena Ducks Cecum and Subpoena Ad Testificandum. A Subpoena Ducks Cecum requires the recipient to bring certain documents or records relevant to the case to the court. A Subpoena Ad Testificandum requires the recipient to appear in court and give testimony regarding the case.