William A. Crafts, Life of Ulysses S. Grant: His Boyhood, Campaigns, and Services, Military and Civil.

Grant earned his reputation and his promotion in this Mexican campaign by his own solid abilities and actual achievements. He was unknown beyond his own regiment, was no pet at headquarters, and was not regarded by influential officers as a young man “of great promise” whom they desired to advance. Nor had he shown simply a temporary dash and enthusiasm, which at times are desirable on the battle-field, but are not always to be relied upon for good results. He was distinguished for cool and steady bravery, that inspired his men with confidence, and a persistency that overcame all obstacles. The substantial services which he rendered by these qualities were conspicuous to those about him, and were thus brought to the notice of superiors who had never heard of him. They were duly acknowledged by those superior officers, but nothing more than simple justice was done. It could not be said in his case that he received honorable mention or promotion either because he was a favorite with his superiors, or had made a brilliant display of bravery under the eye of the commanding general.

When the Mexican war was ended, and the victorious army returned to the United States, the Fourth Infantry was stationed at different posts on the northern frontier along the Great Lakes. While thus stationed, awaiting recruits to fill up the ranks thinned by death and discharges, the officers of the regiment enjoyed furloughs, after their long and arduous service. At this time Grant, still holding the rank of lieutenant,