Leeds is just north of where Cedar Grove once was. Cedar Grove was south of Leeds down highway 119 near the substation.
I too had several ancestors in the 18th Ala. Here is a listing containing all Adams. The men in Company "C" enlisted at Cedar Grove Church under Capt. Oliver.
18th Regiment, Alabama Infantry
Displaying records 1-20 out of 3178 No. Last, First Company Rank_In Rank_Out 1 Aaron, J. M. G FiferPrivate 2 Aaron, James G FiferPrivate 3 Aaron, R. P. G PrivatePrivate 4 Abel, James A. C PrivatePrivate 5 Abel, John W. C PrivatePrivate 6 Abel, Robert M. C PrivatePrivate 7 Abernathy, J. B. E PrivatePrivate 8 Able, John W. C PrivatePrivate 9 Adames, James F PrivatePrivate 10 Adams, A. J. F PrivatePrivate 11 Adams, B. F 12 Adams, Benjamin A PrivatePrivate 13 Adams, Guillis J. C,I PrivatePrivate 14 Adams, H. H PrivatePrivate 15 Adams, H. D. I PrivatePrivate 16 Adams, H. W. C PrivatePrivate 17 Adams, J. A. F PrivatePrivate 18 Adams, J. G. I PrivatePrivate 19 Adams, J. G. G PrivatePrivate 20 Adams, J. M. D PrivatePrivate
Records 21-40 out21 Adams, J. T. F,H PrivatePrivate 22 Adams, James I PrivatePrivate 23 Adams, L. G. I PrivatePrivate 24 Adams, Lewis I PrivatePrivate 25 Adams, T. A. I PrivatePrivate 26 Adams, Taylor G PrivatePrivate 27 Adams, W. P. F PrivatePrivate 28 Adams, W. W. C PrivatePrivate 29 Adams, Wright F PrivatePrivate 30 Aderholdt, David I PrivatePrivate 31 Aichinger, George H PrivatePrivate 32 Alamond, J. H. A PrivatePrivate 33 Alexander, Elisha C PrivatePrivate 34 Alexander, J. W. C PrivatePrivate 35 Alexander, John C PrivatePrivate 36 Alexander, John G 37 Alexander, R. K PrivatePrivate 38 Alford, John I PrivatePrivate 39 Alford, W. A. K PrivatePrivate 40 Allen, Charles H PrivatePrivate