The short answer is no, at least not on the theory the question suggests. Article 78 of the Uniform Code of Military Justice (UCMJ), codified at 10 U.S.C. section 878, defines the offense of accessory after the fact. That offense requires affirmative conduct to help an offender avoid justice. Merely failing to report a crime that one knows about, without more, does not satisfy the elements of Article 78. A junior enlisted member who simply stays silent about another person’s offense has not, by that silence alone, become an accessory after the fact. There are other charges that can reach a failure to report, but Article 78 is not the right vehicle, and understanding why is important both for the accused and for anyone evaluating such a charge.
What Article 78 actually prohibits
Article 78 punishes a person subject to the UCMJ who, knowing that an offense punishable by the Code has been committed, receives, comforts, or assists the offender in order to hinder or prevent the offender’s apprehension, trial, or punishment. To convict, the prosecution must prove four elements beyond a reasonable doubt: that another person committed an offense punishable under the UCMJ; that the accused knew that person had committed the offense; that thereafter the accused received, comforted, or assisted the offender; and that the accused did so for the purpose of hindering or preventing the offender’s apprehension, trial, or punishment.
The third element is the decisive one for this question. It requires an act, receiving, comforting, or assisting the offender, not an omission. The statute targets people who do something to shield a known wrongdoer. Hiding the offender, helping the offender flee, destroying or concealing evidence, providing a false alibi, or lying to investigators to throw them off the trail are the kinds of affirmative acts that can make a person an accessory after the fact. Each of those is conduct undertaken with the specific purpose of frustrating the administration of justice.
Why silence alone is not enough
A failure to report a known offense is an omission, not an act of receiving, comforting, or assisting. Standing by and saying nothing, however troubling, does not by itself help the offender in the way Article 78 requires, and it does not supply the affirmative assistance element. The accessory-after-the-fact offense also requires a specific purpose to hinder apprehension, trial, or punishment. A person who keeps quiet may have any …