Complex sentence: The railway cut of the Gettysburg Battlefield was the place of an 1863 military engagement during the first Day of the Battle of Gettysburg, near the Edward McPherson farmhouse in which railroad tracks had not yet been placed, but which provided a deep entrenchment.
Split into simpler sentences: The railway cut of the Gettysburg Battlefield was the place of an 1863 military engagement during the first Day of the Battle of Gettysburg, near the Edward McPherson farmhouse. It was an excavation in which railroad tracks had not yet been placed, but which provided a deep entrenchment.