“The Rifle Rangers” is one of the first novels by the English writer Mayne Reid, published in 1850. The work tells the reader about the hard fate of American soldiers forced to fight in Mexico (the war of 1846-1848). The main character, Heinrich Haller, manages a battalion called “The Rifle Rangers ". The novel perfectly conveys the atmosphere of those years and what the relations between the United States and Mexico in the middle of the XIX century were.