Selfridge's (James L.) Infantry. See Pennsylvania Troops, 46th Regiment.

Seymour's (Frederick A.) Infantry. See Ohio Troops, 7th Regiment.

Seymour's (George E.) Infantry. See Pennsylvania Troops, 109th Regiment.

Shaler's (Alexander) Infantry. See New York Troops, 65th Regiment.

Shamburg's Cavalry. See Maryland Troops, Union 1st Regiment.

Shaut's (William B.) Infantry. See Pennsylvania Troops, 131st Regiment.

Shepard's (S. G.) Infantry. See Tennessee Troops, Confederate, 7th Regiment.

Sherrill's (Eliakim) Infantry. See New York Troops, 126th Regiment.

Sigfried's (Joshua K.) Infantry. See Pennsylvania Troops, 48th Regiment.

Sillers' (William W.) Infantry. See North Carolina Troops, 30th Regiment.

Simmonds' (Seth J.) Artillery. See Kentucky Troops, Union.

Simpson's (Benjamin L.) Infantry. See Purnell Legion.

Simpson's (John G.) Artillery. See Pennsylvania Troops, 1st Regiment, Battery A.

Simpson's (W. D.) Infantry. See South Carolina Troops, 14th Regiment.

Sims' (John) Infantry. See Mississippi Troops, 21st Regiment.

Sinclair's (William) Infantry. See Pennsylvania Troops, 6th Reserves.

Skinner's (Lewis C.) Infantry. See New York Troops, 104th Regiment.

Sloan's (Thomas) Infantry. See Georgia Troops, 53rd Regiment.

Smith's (Benjamin H., jr.) Artillery. See Richmond Howitzer, 3rd Company.

Smith's (C. Ross) Cavalry. See Pennsylvania Troops, 6th Regiment.

Smith's (Edmund L.) Infantry. See Union Troops, Regulars, 19th Regiment.

Smith's (Jonathan P.) Infantry. See Pennsylvania Troops, 10th Reserves.

Smith's (Levi B.) Infantry. See Georgia Troops, 27th Regiment.

Smith's (Richard P.) Infantry. See Pennsylvania Troops, 71st Regiment.

Smith's (William) Infantry. See Virginia Troops, Confederate, 49th Regiment.

Snider's (Joseph) Infantry. See West Virginia Troops, 7th Regiment.

Snow's (Alonzo) Artillery. See Maryland Troops, Union, Battery B.

Snow's (S.) Infantry. See North Carolina Troops, 12th Regiment.

Speakman's (Franklin B.) Infantry. See Pennsylvania Troops, 133rd Regiment.

Spear's (George C.) Infantry. See Pennsylvania Troops, 61st Regiment.

Squires' (C. W.) Artillery. See Louisiana Troops, Washington Artillery, 1st Battery.

Stagg's (Henry R.) Infantry. See New York Troops, 78th Regiment.

Stamps' (T. H.) Artillery. See Ringgold Artillery.

Stannard's (George J.) Infantry. See Vermont Troops, 9th Regiment.

Staunton Artillery. See Virginia Troops, Confederate.

Steedman's (J. M.) Infantry. See South Carolina Troops, 6th Regiment.

Steel's (James) Infantry. See Sturges Rifles.

Steere's (William H. P.) Infantry. See Rhode Island Troops, 4th Regiment.

Steiner's (John A.) Infantry. See Maryland Troops, Union, 1st Regiment, P. H. B.

Stevens' (P. F.) Infantry. See Holcombe Legion.

Stewart's (James) Artillery. See Union Troops, Regulars, 4th Regiment, Battery B.

Stone's (J. M.) Infantry. See Mississippi Troops, 2nd Regiment.

Stoughton's (Charles B.) Infantry. See Vermont Troops, 4th Regiment.

Stowe's (Leroy W.) Infantry. See North Carolina Troops, 16th Regiment.

Stowe's (William A.) Infantry. See North Carolina Troops, 16th Regiment.

Strange's (John B.) Infantry. See Virginia Troops, Confederate, 19th Regiment.

Stribling's (Robert M.) Artillery. See Fauquier Artillery.

Stricker's (David L.) Infantry. See Delaware Troops, 2nd Regiment.

Strong's (H. B.) Infantry. See Louisiana Troops, 6th Regiment.

Stuart-House Artillery. See Virginia Troops, Confederate.

Stuart's (William) Artillery. See New York Troops, 3rd Battery.

Stuart's (William D.) Infantry. See Virginia Troops, Confederate, 56th Regiment.

Sturges Rifles. See Illinois Troops.

Sudsburg's (Joseph M.) Infantry. See Maryland Troops, Union, 3rd Regiment.

Suiter's (James A.) Infantry. See New York Troops, 34th Regiment.