In the Civil War, Spring Valley furnished volunteers for every department of the service. On April 13, 1861, news reached Spring Valley that Fort Sumpter had been fired upon. The next morning the New York newspapers brought an account of this fort's surrender to the Confederate forces. On April 30,1861, a meeting for the purpose of raising volunteers to help save the Union was held at the Union Sunday School house in Spring Valley. Arrangements were made to obtain funds to provide for the families of the volunteers were also made. 

     A second meeting was held on May 8,1861 and a collection was taken up for the benefit of the volunteers and their families. In September 1861, there was a monster mass meeting in the village which was described as "the largest and most enthusiastic of the citizens of Ramapo that has ever been held in this part of the country" The whole village of Spring Valley attended this meeting "except a few bigoted secessionists, who know not what they do and are therefore more to be pitied than despised".