51 Pa.C.S. § 5901 – Error of law; lesser included offense

(a) Error of law.— A finding or sentence of a court-martial shall not be held incorrect on the grounds of an error of law unless the error materially prejudices the substantial rights of the accused.
(b) Approval of lesser offense.— Any reviewing authority with the power to approve or affirm a finding of guilty may approve or affirm so much of the finding as includes a lesser included offense.