On May 4, from 1 to 5 p.m., the Lincoln Group of D.C. is sponsoring a symposium, “Lincoln, Lieber and the Law of War: 1863-9/11” at the E. Barrett Prettyman Federal Courthouse in Washington. It will take place in the ceremonial court room.

The symposium commemorates the sesquicentennial of the publication of the first code identifying the laws of war for the U.S. armed forces, according to a news release. It was prepared by legal scholar Francis Lieber and later served as the modal for the Geneva conventions, the sponsors said.

The speakers include Yale University law professor and author John Fabian Witt, Georgetown University adjunct professor of law Gary Solis, George Washington University adjunct professor of law and author Burrus Carnahan and Michelle Poore, U.S. Army judge advocate chief, Law of War Branch, International Law Division.

Registration is required and the cost to attend is $35, which can be paid online at www.lincolngroup.org/lieber.html. For more information, contact John T. Elliff at 703-360-1265.