He lived in Kansas, Colorado, Utah, and Montana before setting in Oklahoma City on July 4, 1893.

[2] Barrett served in the Oklahoma Territory militia as a captain enlisting in 1896 before the Spanish-American War, but did not see combat due to an injury.

[1][3] In 1914, he became a judge advocate and in 1919 he was appointed as the Adjutant General of Oklahoma to reorganize the guard for World War I.

[1] When he arrived in Tulsa, he was required to report to local authorities, but could not find them delaying his response by three hours.

He died in Albuquerque, New Mexico on February 11, 1946, and was buried at Fairlawn Cemetery in Oklahoma City.