The most detailed regimental level account ever written of the critical and often overlooked first day of the Civil War's greatest battle, using primary, first-hand sources almost entirely, many of which are unpublished, and some of which have not been cited before.Gettysburg July 1 combines the most recent scholarly interpretations of the action with original analysis by the author and gives a fresh approach to the battle at the tactical level, with emphasis on the experience and competence of regimental and brigade commanders.