Here's a breakdown of the setting:
* Location: Frederick, Maryland is a town located in the northern part of the state, close to the Mason-Dixon line. It was a key strategic location during the Civil War, as it was a crucial link between the North and South.
* Time: The poem takes place during the Battle of Frederick, a minor skirmish that occurred on September 12, 1862, as Confederate General Robert E. Lee's Army of Northern Virginia marched through the town.
* Atmosphere: The poem depicts a tense and chaotic atmosphere, with the town under the threat of Confederate invasion and the possibility of a bloody conflict. The presence of Confederate troops and the anticipation of battle create a palpable sense of fear and uncertainty.
The poem highlights the setting's significance by emphasizing the historical and political context of the time. Frederick's strategic importance, the ongoing Civil War, and the presence of Confederate forces all contribute to the poem's powerful message of defiance and courage.