Fielder later helped to form several Japanese Americans formations such as Varsity Victory Volunteers, 100th Infantry Battalion and 442nd Regimental Combat Team.

Fielder graduated in summer 1916 with Bachelor of Science degree in textile engineering and accepted job as Real estate loan agent in Atlanta, Georgia.

[4][3] Following the United States' entry into World War I, Fielder was commissioned second lieutenant in the Infantry branch on May 31, 1917, and ordered for basic training at Fort McPherson.

[3] Fielder was ordered to Hawaii in November 1938 and assumed duty as Executive officer, 22nd Infantry Brigade under Brigadier general Clement A. Trott.

He served with this command at Schofield Barracks and participated in the training of Japanese Americans soldiers in the 298th Infantry Regiment, the part of Hawaii National Guard.

In February 1941, Fielder was promoted to Colonel and transferred to Fort Shafter in Honolulu, where he assumed duty as Assistant Chief of Staff, G-2 (Intelligence), Hawaiian Department under lieutenant general Walter C. Short.

He investigated allegations of espionage and sabotage, worked with the press to ensure accurate reporting, and gave two radio addresses to calm the fears of the population.

Emmons also formed a Public Morale Division in the Territorial Office of Civilian Defense, whose responsibilities included race relation recommendations to Fielder.

John Burns, head of the Honolulu Police Contact Group, described Fielder as "a man of exemplary courage and an outstanding American" for his actions countering the general.

This petition was submitted to Fielder, who in turn convinced Emmons to form the Varsity Victory Volunteers, a civilian Japanese Americans sapper unit.

[4][6] Fielder continued in the capacity of Assistant Chief of Staff, G-2 (Intelligence), Hawaiian Department under new commanding general, Robert C. Richardson Jr. and toured military installations in the Pacific area during the rest of the war.

Following the War, Fielder was reverted to the rank of Colonel and ordered to Washington, D.C., where he assumed duty as Deputy Chief of the Public Information Division for the Army under Major general Floyd L.

He remained in this capacity until August 1954 and later served as a member of the Board of Director, Crown Corporation, a Hawaii-based diversified growth company engaged in insurance, real estate, property management and development, printing, publishing, garment manufacturing and automotive sales.