Statistics for occurrence #1 of “General Hooker” in chapter 11 of Thomas Wentworth Higginson, Harvard Memorial Biographies:

...pon the enemy, who had crossed the Upper Potomac into Maryland. On the 17th of September, 1862, Dr. Revere accompanied his regiment in its advance under General Sumner, to follow up the charge of General Hooker upon the enemy's troops under General Lee. The latter general had taken position for the battle on the heights in front of Sharpsburg, between that place and the Antietam River. The Twentieth Mas...
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