Back in that day (1945), the editor's hyperbole in titling the article would not have been hyperbole.

Breaking the Color Barrier: The U.S. Naval Academy's First Black ... - Google Books Result by Robert John Schneller, Robert John Schneller, Jr. - 2005 - Social Science - 331 pages

"In August 1945, black Army officers numbered 7768, accounting for roughly 0.88 percent of all Army officers."
Moving ahead to circa 1963-1968, for more statistics than anyone probably wants:

CHAPTER 22
Equal Opportunity in the Military Community
.....
The low percentage of black officers, a matter of special concern to the Civil Rights Commission and the Gesell Committee as well as the civil rights organizations, remained relatively unchanged in the 1960's (see Table 24). Nor could any dramatic rise in the number of black officers be expected. Between 1963 and 1968 the three service academies graduated just fifty-one black officers, an impressive statistic only in the light of the record of a total of sixty black graduates in the preceding eighty-six years.
.....
Chance of promotion for officers and men was one factor in judging equal treatment and opportunity in the services. A statistical comparison of the ranks of enlisted black servicemen between 1964 and 1966 reveals a steady advance (Table 28). With the exception of the Air Force, the percentage of Negroes in the higher enlisted ranks compared favorably with the total black percentage in each service. The advance was less marked for officers, but here too the black share [Army = 5.2% in 1966] of the O-4 grade (major or lieutenant commander) was comparable with the black percentage of the service's total strength. The services could declare with considerable justification that reform in this area was necessarily a drawnout affair; promotion to the senior ranks must be won against strong competition.
....
In addition to complaining of direct denial of promotion opportunity, so-called "vertical mobility," some black officers alleged that their chances of promotion had been systematically reduced by the services when they failed to provide Negroes with "horizontal mobility," that is, with a wide variety of assignments and all-important command experience which would justify their future advancement. Supporting these claims, the civil rights office reported that only 5 Negroes were enrolled at the senior service schools in 1965, 4 black naval officers with command experience were on active duty, and 26 black Air Force officers had been given tactical command experience since 1950.
http://www.history.army.mil/books/in...ion/IAF-22.htm

above from the following:

DEFENSE STUDIES SERIES
INTEGRATION OF THE ARMED FORCES
1940-1965
by Morris J. MacGregor, Jr.
CENTER OF MILITARY HISTORY
UNITED STATES ARMY
WASHINGTON, D.C. 1985
http://www.history.army.mil/books/in...ion/IAF-fm.htm