Nixon's (Richard) Infantry. See New York Troops, 99th Regiment.

Norcom's (Joe) Artillery. See Washington (La.) Artillery, post, 4th Battery.

Norfolk Blues, Artillery. See Virginia Ohio Troops, 1st Regiment, Battery H.

Nowlen's (Garrett) Infantry. See Pennesylvania Troops, 116th Regiment.

O'Connell's (John D.) Infantry. See Union Troops, Regulars, 14th Regiment.

Olcott's (Egbert) Infantry. See New York Troops, 121st Regiment.

Oley's (John H.) Infantry. See West Virginia Troops, 8th Regiment.

Olmstead's (Ralph H.) Cavalry. See New York Trops, 12th Regiment.

Onderdonk's (Benjamin F.) Cavalry. See New York Troops, 7th Regiment.

O'Neal's (Edward A.) Infantry. See Alabama Troops, 26th Regiment.

Oneida Cavalry. See New York Troops.

O'Neill's (Henry) Infantry. See Pennsylvania Troops, 118th Regiment.

Opp's (Milton) Infantry. See Pennsylvania Troops, 84th Regiment.

Orange Artillery. See Virginia Troops, Confederate.

Orem's (J. Bailey) Cavalry. See maryland Troops, Union, 4th Regiment.

Orr's (James L.) Infantry. See South Carolina Troops, 1st Regiment, Rifles.

Orton's (William H.) Cavalry. See District of Columbia Troops.

Orwing's (Thomas G.) Artillery. See Pennsylvania Troops, 1st Regiment, Battery E.

Otey Artillery. See Virginia Troops, Confederate.

Otey's (Van R.) Infantry. See Public Guard, Infantry, post.

Otis' (George H.) Infantry. See Wisconsin Troops, 2nd Regiment.

Over's (C. Miller) Infantry. See Pennsylvania Troops, 10th Reserves.

Owen's (Henry T.) Infantry. See Virginia Troops, Confederate, 18th Regiment.

Owen's (Thomas H.) Cavalry. See Virginia Troops, Confederate, 3rd Regiment.

Owen's (William A.) Infantry. See North Carolina Troops, Confederate, 53rd Regiment.

Packer's (Warren W.) Infantry. See Connecticut Troops, 5th Regiment.

Page's (Powhatan R.) Infantry. See Virginia Troops, Confederate, 26th Regiment.

Page's (Richard C. M.) Artillery. See Morris Artillery, ante.

Palmer's (Thomas H.) Heavy Artillery. See Maine Troops, 1st Regiment.

Palmetto Artillery. See South Carolina Troops.

Palmetto Sharpshooters. See South Carolina Troops.

Pamunkey Heavy Artillery. See Virginia Troops, Confederate.

Paoli's [?] Battalion. Official designation not of record. See --- Paoli.

Parham's (William A.) Infantry. See Virginia Troops, Confederate, 41st Regiment.

Paris' (Andrew B.) Artillery. See Staunton Hill Artillery, post.

Park Artillery. See Pensylvania Troops.

Parker's (Francis M.) Infantry. See North Carolina Troops, Confederate, 30th Regiment.

Parker's (N.) Cavalry. See Kentucky Troops, Confederate, 4th Regiment.

Parker's (Sewell S.) Infantry. See Michigan Troops, 26th Regiment.

Parker's (William W.) Artillery. See Virginia Troops, Confederate.

Parnell's (William R.) Cavalry. See New York Troops, 4th Regiment.

Parson's (Joseph B.) Infantry. See Massachusetts Troops, 10th Regiment.

Patapsco Guards, Infantry. See Maryland Troops, Union.

Pate's (Henry Clay) Cavalry. See Virginia Troops, Confederate, 5th Regiment.

Patrick's (John H.) Infantry. See Ohio Troops, 5th Regiment.

Patterson's (Edmund Y.) Infantry. See Pennsylvania Troops, 88th Regiment.

Patterson's (George M.) Artillery. See Sumter Artillery, post, Battery B.

Patterson's (John W.) Infantry. See Pennsylvania Troops, 102nd Regiment.

Patton's (George S.) Infantry. See Virginia Troops, Confederate, 22nd Regiment.

Patton's (William) Cavalry. See Virginia Troops, Confederate, 4th Regiment.

Peale's (Henry) Infantry. See Connecticut Troops, 18th Regiment.