O'Connor's (Dennis) Infantry. See Missouri Troops, Union, 27th Regiment.

O'Connor's (Thomas) Infantry. See New Jersey Troops, 33rd Regiment.

Odell's (Charles H.) Infantry. See New York Troops, 119th Regiment.

Olson's (Porter C.) Infantry. See Illinois Troops, 36th Regiment.

Opdycke's (Emerson) Infantry. See Ohio Troops, 125th Regiment.

Orcutt's (Benjamin F.) Infantry. See Michigan Troops, 25th Regiment.

Orr's (John M.) Infantry. See Indiana Troops, 124th Regiment.

Osborne's (Milton A.) Artillery. See Indiana Troops, 20th Battery.

Owen's (Alfred D.) Infantry. See Indiana Troops, 80th Regiment.

Oyler's (Samuel P.) Infantry. See Indiana Troops, 79th Regiment.

Packard's (Jasper) Infantry. See Indiana Troops, 128th Regiment.

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

Paddock's (Byron D.) Artillery. See Michigan Troops, 1st Regiment, Battery F.

Paine's (Nathan) Cavalry. See Wisconsin Troops, 1st Regiment.

Pardee's (Ario, jr.) Infantry. See Pennsylvania Troops, 4th Regiment.

Parker's (George W.) Infantry. See Indiana Troops, 79th Regiment.

Parrish's (Charles S.) Infantry. See Indiana Troops, 130th Regiment.

Parrott's (James C.) Infantry. See Iowa Troops, 7th Regiment.

Parry's (Augustus C.) Infantry. See Ohio Troops, 47th Regiment.

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

Patten's (Thomas J.) Cavalry. See Ohio Troops, 1st Regiment.

Payne's (Oliver H.) Infantry. See Ohio Troops, 124th Regiment.

Pearce's (John S.) Infanry. See Ohio Troops, 98th Regiment.

Pearson's (Robert N.) Infantry. See Illinois Troops, 31st Regiment.

Peatman's (Norris T.) Infantry. See Ohio Troops, 26th Regiment.

Perkins' (George T.) Infantry. See Ohio Troops, 105th Regiment.

Perrin's (Hector) Infantry. See Illinois Troops, 7th Regiment.

Phelps' (Egbert) Infantry. See Union Troops, Regulars, 19th Regiment 1st and 2nd Battalions.

Philips' (Henry L.) Infantry. See Ohio Troops, 70th Regiment.

Phillips' (Alexander) Infantry. See Pennsylvania Troops, 77th Regiment.

Phuillips' (Jesse J.) Infantry. See Illinois Troops, 9th Regiment.

Pickand's (James) Infantry. See Ohio Troops, 124th Regiment.

Pinkerton's (Adam) Infantry. See Indiana Troops, 72nd Regiment.

Pomutz's (George) Infantry. See Iowa Troops, 15th Regiment.

Post's (Franklin C.) Infantry. See Illinois Troops, 103rd Regiment.

Post's (P. Sidney) Infantry. See Illinois Troops, 59th Regiment.

Pott's (Benjamin F.) Infantry. See Ohio Troops, 32nd Regiment.

Powell's (Eugene) Infantry. See Ohio Troops, 66th Regiment.

Powell's (Eugene) Infantry. See Ohio Troops, 2nd Regiment, Battery F.

Power's (Edwin H.) Infantry. See Ohio Troops, 55th Regiment.

Prather's (Allen W.) Infantry. See Indiana Troops, 120th Regiment.

Prescott's (Mark H.) Artillery. See Illinois Troops, 1st Regiment, Battery C.

Price's (Samuel W.) Infantry. See Kentucky Troops, Union, 21st Regiment.

Prouddfit's (James K.) Infantry. See Wisconsin Troops, 12th Regiment.

Prudyh's (George H.) Cavalry. See Indiana Troops, 4th Regiment.

Raffen's (Alexandedr W.) Infantry. See Illinois Troops, 19th Regiment.

Ragan's (Robert A.) Infantry. See Tennessee Troops, Union, 8th Regiment.

Ragle's (Jacob) Infantry. See Indiana Troops, 80th Regiment.

Rainey's (John T.) Infantry. See Ohio Troops, 78th Regiment.

Randall's (Charles B.) Infantry. See New York Troops, 149th Regiment.

Redfield's (James) Infantry. See Iowa Troops, 39th Regiment.

Reeve's (Felix A.) Infantry. See Tennessee Troops, Unioin, 8th Regiment.

Reid's (Donald) Infantry. See Maryland Troops, Union, 3rd Regiment.

Reppert's (Henry C.) Cavalry. See Ohio Troops, 1st Regiment.