Major general, or two-star, is the highest rank to which an officer can be promoted by regular military action. Becoming a three-star — lieutenant general — or a four-star general requires a presidential nomination and confirmation by Congress. It, therefore, is not considered permanent and lasts only as long as the person is serving in a job of that rank.
That technical demotion is not uncommon as generals move from job to job and unexpected delays occur. It would not have affected Ward’s ability to retire as a four-star, if he had been cleared of the charges.