Statistics for occurrence #1 of “Cumberland Valley” in chapter 34, regiment PA3Cav of Frederick H. Dyer, Compendium of the War of the Rebellion: Regimental Histories:

...864, to April 2, 1865. Assaults on Petersburg June 16-18, 1864. Charles City Cross Roads June 29. Consolidated to a Battalion of three Companies July 27, 1864. Non-Veterans on duty in Cumberland Valley till mustered out August 24, 1864. Reconnoissance to Hatcher's Run December 9-10. Hatcher's Run December 9. Dabney's Mills, Hatcher's Run, February 5-7, 1865. Fall of Petersburg April...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Cumberland Valley (Pennsylvania, United States) 67 4 1 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.