The answer is true. By the time of his court-martial in August 1944, the charges against Jackie Robinson had been reduced to just two counts of insubordination during questioning. Robinson was acquitted by an all-white panel of nine officers.

In 1942, Robinson was drafted and assigned to a segregated Army cavalry unit in Fort Riley, Kansas. Having the requisite qualifications, Robinson and several other black soldiers applied for admission to an Officer Candidate School (OCS) located at Fort Riley. Ultimately, he was admitted. Upon finishing OCS, Robinson was commissioned as a 2nd lieutenant in January 1943.

An event on July 6, 1944 derailed Robinson's military career. While awaiting results of hospital tests on the ankle he had injured in junior college, Robinson boarded an Army bus with a fellow officer's wife; although the Army had commissioned its own unsegregated bus line, the bus driver ordered Robinson to the back of the bus. Robinson refused. The driver backed down, but after reaching the end of the line, summoned the military police, who took Robinson into custody.

When Robinson later confronted the investigating duty officer about racist questioning by the officer and his assistant, the officer recommended Robinson be court-martialed. Robinson's commander in the 761st, Paul Bates, refused to authorize the legal action. Robinson was then transferred to the 758th Battalion—where the commander quickly consented to charge Robinson with multiple offenses.

More Info: en.wikipedia.org