[2] Several of his classmates would go on to become general officers in their careers, such as Chase Wilmot Kennedy, George H. Cameron, Harry Clay Hale, George Windle Read, John William Heard, Ira Allen Haynes, Samson L. Faison, Omar Bundy, Robert D. Walsh, Lawrence Tyson, Charles Gould Morton, Tyree R. Rivers, John Wilson Ruckman, Isaac Littell and Clarence Ransom Edwards.

[2] During the Spanish–American War, Langfitt was promoted to major with the 2nd United States Volunteer Engineer Regiment, and served in the Hawaiian Islands.

He commanded the regiment until August, when he was promoted to brigadier general and joined the American Expeditionary Forces as chief of staff.

[1] Following World War I Langfitt returned to the United States, where he reverted to the permanent rank of colonel and served as district engineer in New York and Puerto Rico until retiring in 1922.

As Director of Light, Railways, and Roads, and later as Chief of Utilities, General Langfitt displayed great ability and marked breadth of vision.

As Chief Engineer of the American Expeditionary Forces his brilliant professional attainments, untiring energy, and devotion to duty placed his department in a state of efficiency and enabled it to perform its important function in the most satisfactory manner.