Confederate Partisan Map, September 1864

Map showing location of Confederate partisan activity during September, 1864.

According to the official records of the Civil War (which includes this dispatch from September 28, 1864 at 4.20 p. m.), such guerilla attacks were effective:

"A large force of guerrillas crossed from Jackson to Clay County last night and are this morning threatening Liberty. I have ordered re-enforcements to Clay County, and directed General Craig to place in service forthwith all the reliable militia. Guerrillas swarming in every brush patch. Quite a large force are threatening Glasgow." 

Credits

Map, courtesy Centralia.org

Quoted passage from Series 1, Vol 41, Part 3, page 453 (Official Records - The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies).