While stationed in Panama in 1986, Sergeant Oglivie (defendant) married his first wife, Amparo. When Oglivie was reassigned to Germany, and later to Oklahoma, Amparo remained in Panama, and Oglivie, who did not have Amparo’s address or telephone number, communicated with her only though a friend. In August 1988, Oglivie filed for divorce in Oklahoma and sent a copy of the divorce petition to his friend in Panama. Later that year, Amparo contacted Oglivie to inform him that she had filed for divorce in Panama. After this communication, Oglivie believed he was legally divorced. Reinforcing this belief was a communication from the Red Cross referring to Amparo as Oglivie’s ex-wife. Because a copy of a divorce decree, which Oglivie did not have, was required to modify basic allowance for quarters (BAQ) to a single person’s rate, Oglivie modified a copy of a friend’s divorce decree and submitted it to the finance office of the base where he was stationed. In December 1988, Oglivie married his second wife and requested that his BAQ be reinstated to the married person’s rate. Oglivie was charged under the Uniform Code of Military Justice (UCMJ), 10 U.S.C. §§ 801–946, for, among other offenses: (1) making two false official statements to the finance office, (2) bigamy, and (3) altering a public record. Oglivie pled guilty to altering a public record but was also convicted, against his pleas, of bigamy and making the two false official statements. Oglivie appealed on the ground that his mistake as to his marital status was a defense to the charges.