Character evidence - The General Principle
Character evidence is inadmissible to prove that a person acted in conformity therewith on a specified occasion.
“Courts that follow the common-law tradition almost unanimously have come to disallow resort by the prosecution to any kind of evidence of a defendant’s evil character to establish a probability of his guilt. . . . The State may not show the defendant’s prior trouble with the law, specific criminal acts, or ill name among his neighbors, even though such facts might logically be persuasive that he is by propensity a probable perpetrator of the crime.” Michelson v. United States, 335 U.S. 469, 475 (1948) (footnotes omitted)(citation omitted).
Competing Concerns: proper and improper inferences concerning character that arise from pertinent traits or unrelated prior bad acts v. information pertinent to the element of the crime charged.
Mil. R. Evid. 404(a) – the Exceptions.
Character evidence not admissible to prove conduct; exceptions; other crimes.
(a) Character evidence generally. Evidence of a person’s character or a trait of a person’s character is not admissible for the purpose of proving that the person acted in conformity therewith on a particular occasion, except:
(1) Character of the accused. Evidence of a pertinent trait of the character of the accused offered by an accused, or by the prosecution to rebut the same;
(2) Character of victim. Evidence of a pertinent trait of character of the victim of the crime offered by an accused, or by the prosecution to rebut the same, or evidence of a character trait of peacefulness of the victim offered by the prosecution in a homicide or assault case to rebut evidence that the victim was an aggressor;
(3) Character of witness. Evidence of the character of a witness, as provided in Mil. R. Evid. 607, 608, and 609.
Pertinent trait of the Accused:
The accused may offer a character witness to testify concerning a pertinent character trait which makes it unlikely that he committed the charged offense (Mil. R. Evid. 404(a)(1)). In other words, this is circumstantial evidence of conduct. “Pertinent” in 404(a) means the same thing as “relevant” as that term is defined in 401.
Mechanically, the proponent demonstrates, through direct evidence, the following:
The person has a particular character trait;
the witness has an opinion about the trait, or is familiar with the person’s reputation concerning that particular trait, or can testify concerning specific acts relevant to the trait;
the witness states an opinion, relates the reputation, or, under very limited circumstances, testifies about specific instances of conduct relevant to the trait in issue. MRE 405.
When submitting the request for reputation or opinion witnesses, the proffer should include the following foundational elements: the name of the witness, whether the witness belongs to the same community or unit as the accused, how long the witness has known the accused, whether he knows him in a professional or social capacity, the character trait know, and a summary of the expected testimony. United States v. Breeding, 44 M.J. 345 (1996).
The formula could be applied in the following scenarios:
Pertinent
Offense Character Trait
Larceny Trustworthiness or Honesty
Drunkenness Sobriety

