Statistics for occurrence #1 of “Osterhaus” in chapter 8.26 of Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War: The Opening Battles. Volume 1.:

...disaster which befell our cavalry, the advance and onslaught of McCulloch's troops were checked by the command of Osterhaus. The speedy arrival of Colonel Jeff. C. Davis's division on the right of Osterhaus , and its energetic advance, turned a very critical moment into a decisive victory of our arms. McCulloch and McIntosh fell while leading their troops in a furious attack against Osterhaus and Davis...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Peter J. Osterhaus 266 42 14 2 0 user votes
P. J. Osterhaus 410 0 12 0 0 user votes
Osterhaus 354 0 84 0 0 user votes
B. J. Osterhaus 104 0 2 0 0 user votes
P. I. Osterhaus 51 0 1 0 0 user votes
Peter Joseph Osterhaus 30 0 0 0 0 user votes
P. Joseph Osterhaus 22 0 2 0 0 user votes
Major-Generals Osterhaus 2 0 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.