Answer:
Harry Truman
On July 26, 1948, President Harry S. Truman signed this executive order establishing the President's Committee on Equality of Treatment and Opportunity in the Armed Services, committing the government to integrating the segregated military.
Explanation:
The President who desegregated the military in 1948 with the Executive Order 9981 was President Truman. The order was put through on July 26, 1948, and ordered the immediate desegregation of the armed forces as part of the efforts to desegregate America more widely.