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The 1863 Invasion Of Pennsylvania, Michael J. Gallagher

Theses

Confederate General Robert E. Lee’s invasion of Pennsylvania in 1863 was a grave mistake, on a variety of levels, which ultimately culminated in a crippling defeat at Gettysburg. After the Army of Northern Virginia successfully defended southern territory against northern attacks, the transition to an offensive strategy, advancing north in to Pennsylvania was a vast miscalculation. Lee’s army now traversed enemy territory, leaving behind the advantages of a campaign on southern territory and abandoning a defensive posture. This transition to fighting on enemy territory brought several difficulties that Lee seemingly overlooked, and presented challenges for which Lee was unprepared. Lee …