Section 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.Added by P.L. 1506 2012 No. 192, § 2, eff. 10/24/2013.