He later toured most of Europe and returned to the U.S. to report to Grant that although the Prussians were "very good brave fellows had gone into each battle with the determination to win, ... there is nothing to be learned here professionally."
Senere tog han rundt i det meste af Europa og vendte tilbage til Grant og fortalte, at selv om preusserne var "meget gode, tapre fyre, som var gået ind i hvert slag for at vinde … var der ikke noget at lære der rent professionelt".