This collection contains the Dept. of Northern Virginia General Orders No. 27, dated February 28, 1862, made by General Joseph E. Johnston, written by A. P. Mason, and officially copied by C. R. Holmes. The order indicates two types of signals that will be made, one by night from Capt. Alexander's Quarters and one by day from Centreville, and states that all sentinals on guard are to report when the signals are seen or heard.