Colt Walker of Texas had been the major purchaser of the early Paterson Holster Pistol (No. 5 model), a five shot cal .36 revolver, and Samuel Walker became familiar with it during his service as a Texas Ranger. In 1847, Walker was engaged in the Mexican-American War as a captain in the United States Mounted Rifles. He approached Colt, requesting a large revolver to replace the single-shot Aston Johnson holster pistols then in use. The desired .44-.45 caliber revolver would be carried in saddle mounted holsters and would be large enough to dispatch horses as well as enemy soldiers. The Colt Walker
Samuel Colt introduced the adjective "new and improved" to advertising and demonstrated the commercial value of brand-name recognition as the word for "revolver" in French is "Le Colt". Barbara M. Tucker, professor of history and director of the Center for Connecticut Studies at Eastern Connecticut State University, wrote that Colt's marketing techniques transformed the firearm from a utilitarian object into a central symbol of American identity. Tucker added that Colt tied his revolvers to American patriotism, freedom and individualism while asserting America's technological supremacy over Europe's. In 1867, his widow, Elizabeth, had an Episcopal church designed by Edward Tuckerman Potter built as