David L. Shultz is the author of many articles concerning the Battle of Gettysburg, and several books including Guide to Pennsylvania Troops at Gettysburg, The Battle Between the Farm Lanes: Hancock Saves the Union Center, and the co-author (with Scott Mingus Sr.) of The Second Day at Gettysburg: The Attack and Defense of Cemetery Ridge, July 2, 1863 (Savas Beatie, 2016). He is currently working on an extensive and comprehensive tactical study on the artillery at Gettysburg.