Final answer:
The armed forces continued to operate segregated basic and field trainings even after the Fair Employment Practices Commission was established in 1941.
Step-by-step explanation:
The group that continued to operate segregated basic and field trainings even after the establishment of the Fair Employment Practices Commission in 1941 was the armed forces. Despite the commission being created to bar racial discrimination in the defense industry, the armed forces remained segregated throughout the war. African Americans were not given equal opportunities and were confined to lower-paid positions, such as low-paid construction workers, rather than being hired as laboratory technicians.