Twenty years have passed away since a band of hastily-gathered minute-men left their homes to defend the soil of Pennsylvania from the first threatened invasion of the State by the rebel army under General . Lee. Viewed through the lapse of this long period, crowded as it has been with so many momentous events in the life of the nation, the incidents of that brief and comparatively unimportant campaign begin, nevertheless, from their increasing remoteness, to take upon themselves a degree of historic interest. In respect to both their significance and their adventure, they greatly exceed the occurrences which attended the march of the celebrated Advance.
