This goggle search should get you on your way:

https://www.google.ca/search?source=hp&ei=xUHmWtXQN6yUjwSu4JyYDw&q=Lancaster%2C+Missouri+in+the+civil+war&oq=Lancaster%2C+Missouri+in+the+civil+war&gs_l=psy-ab.3..33i22i29i30k1l10.6324.16555.0.17340.27.27.0.0.0.0.176.3512.0j25.25.0....0...1c.1j2.64.psy-ab..2.23.3223...0j46j0i131k1j0i46k1j0i22i30k1.0.U9aGxUCT1SY