Ostermayer's (Peter) Cavalry. See Missouri Troops, Union, 5th Regiment, State Militia (new).

Owen's (Julian D.) Cavalry. See Indiana Troops, 1st Regiment.

Pace's (Lewis C.) Cavalry. See Missouri Troops, Union, 11th Regiment.

Pace's (Thomas N.) Cavalry. See Indiana Troops, 1st Regiment.

Palmer's Cavalry. See Arkansas Troops, Confederate.

Palmer's (Henry E.) Infantry. See Kansas Troops, 11th Regiment.

Parkell's (Alonzo B.) Cavalry. See Iowa Troops, 4th Regiment.

Parker's (Charles W.) Infantry. See Missouri Troops, Union, 37th Regiment, Enrolled Militia.

Parker's (Wilson L.) Cavalry. See Missouri Troops, Union, 4th Regiment, State Militia.

Parmetar's (James W.) Infantry. See Kansas Troops, 12th Regiment.

Parsons' (W. H.) Cavalry. See Texas Troops, 12th Regiment.

Pattee's (John) Infantry. See Iowa Troops, 41st Regiment.

Patterson's (Robert F.) Infantry. See Missouri Troops, Union, 1st Regiment.

Peabody's (Albert P.) Cavalry. See Missouri Troops, Union, 1st Regiment.

Penick's (William R.) Cavalry. See Missouri Troops, Union, 5th Regiment, State Militia (old).

Penney's (Thomas H.) Infantry. See Missouri Troops, Union, 35th Regiment.

Peoples' (S. J.) Cavalry. See Desha Rangers.

Peoria Artillery. See Illinois Troops, 2nd Regiment, Battery A.

Phelps' (John E.) cavalry. See Arkansas Troops, Union, 2nd Regiment.

Philips' (John F.) Cavalry. See Missouri Troops, Union, 7th Regiment, State Militia.

Phillips' (Joseph) Cavalry. See Texas Troops, 3rd Regiment, Arizona Brigade.

Phillips' (O. P.) Infantry. See Missouri Troops, Union, 66th Regiment, Enrolled Militia.

Phillips' (William A.) Infantry. See Indian Troops, Union, 3rd Regiment, Home Guards.

Phul's (Benjamin von*) Artillery. See Benjamin von Phul.

Pickens' (Edmond) Indians. See Indian Troops, Confederate.

Pickett's (A. C.) Infantry. See A. E. Steen's Infantry.

Pickler's (J. F.) Cavalry. See T. R. Livingston's Cavalry.

Pikes' (Bennett) Infantry. See Missouri Troops, Union, 3rd Regiment, Provisional Enrolled Militia.

Pikes' (Joshua A.) cavalry. See Kansas Troops, 9th Regiment.

Pile's (William A.) Infantry. See Missouri Troops, Union, 33rd Regiment.

Pindall's (L. A.) Sharpshooters. See Missouri Troops, Confederate.

Pinger's (John) Cavalry. See Missouri Troops, Union, 5th Regiment, State Militia (old).

Pleasants' (J. C.) Infantry. See Arkansas Troops, Confederate, 29th Regiment.

Plumb's (William) Cavalry. See Missouri Troops, Union, 6th Regiment, State Militia.

Pond's (J. C.) Cavalry. See Wisconsin Troops, 3rd Regiment.

Ponder's (W. M.) Infantry. See James D. White's Infantry.

Poole's (Frederick R.) Cavalry. See Missouri Troops, Union, 2nd Regiment, State Militia.

Porter's (James W.) Cavalry. See Missouri Troops, Confederate, 4th Regiment.

Porter's (Joseph C.) Cavalry. See Missouri Troops, Confederate.

Pound's (John#) Cavalry. See Missouri Troops, Union, 4th Regiment, State Militia.

Powers' (P. L.) Infantry. See Missouri Troops, Union, 8th Regiment, Provisional Enrolled Militia.

Pratt's (J. H.) Artillery. See Texas Troops.

Praul's (Lafayette) Cavalry. See Missouri Troops, Union, 3rd Regiment, State Militia (new).

Preston's (W. J.) Cavalry. See Missouri Troops, Confederate, 4th Regiment.

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*Improvised.

#Temporarily commanding.

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