Writing in the field on the railroad line at Frederick Junction, Maryland (June 30 to July 1) ; topics include being with the 3rd Army Corps under Gen. French, days of rainy weather, having to sleep out doors with only a rubber blanket, put in charge of 3000 men, troops assigned to defend a bridge crossing the Manoray River and hearing the distant sound of cannon (perhaps Pickett's Charge as part of the Battle of Gettysburg)