On July 3 at 1:00 pm the artillery barrage from 140 Confederate cannons started, and at 3:00 pm, the Confederates formed a battle line to march across a mile of open field.
The artillery barrage from 140 Confederate cannons started. This was on July 3 at 1:00 pm. The Confederates formed a battle line. This was at 3:00 pm. This was to march across a mile of open field.