Mezue ahịrịokwu na-esonụ: Mgbe Agha Ụwa Mbụ tiwapụrụ n'August 1914, e nyere Krueger ọrụ dị ka onye na-ekiri ihe na-eme n'Òtù Ndị Agha Germany ma a manyere ya ịjụ ya n'ihi ọrụ ezinụlọ. Kama nke ahụ, e zigara ya na 10th Infantry nke Pennsylvania Army National Guard. A kpọbatara ndị agha ahụ na 23 June 1916 ma jee ozi n'akụkụ ókèala Mexico ruo ọnwa ise dịka akụkụ nke ndị agha na-alụ ọgụ.
Ndị Mexico na-ahụ maka ịta ahụhụ n'okpuru Major General John J. Pershing, ọ bụ ezie na ọ dịghị ndị nchebe mba na-alụ ọgụ ndị agha Mexico. E wepụrụ ndị agha ahụ n'October 1916.