Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. Dr. Justin H. Smith's valuable work entitled The War with Mexico was published soon after the manuscript of my volume had been completed. Although it appeared too late to be used in the preparation of my manuscript, I am gratified to note that on most points covered by the two works we have arrived at substantially the same conclusions.