2018 Political Law, Q14

Amoroso was· charged with treason before a military court martial. He was acquitted.
He was later charged with the same offense before a Regional Trial Court. He asks that the information be quashed on the ground of double jeopardy.
The prosecution objects, contending that for purposes of double jeopardy, the military court martial cannot be considered as a “competent court.”
Should the Regional Trial Court grant Amoroso’s motion to quash on the ground of double jeopardy? (2.5%)

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Is a military court martial considered a competent court for purposes of attaching double jeopardy?

What is the legal effect of an acquittal of treason by a competent military court martial?

Why does an acquittal by a court martial bar a subsequent prosecution in a Regional Trial Court for the same offense?

What is the proper procedural remedy for an accused facing a second prosecution for an offense after an acquittal by a court martial?

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Under Article III, Section 21 of the 1987 Constitution, what element is essential for double jeopardy to attach?

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1. Court Martial Jurisdiction
Under Philippine constitutional law and jurisprudence, a military court martial is a legal court of competent jurisdiction created under the law to try military offenses and statutory crimes committed by military personnel. Courts martial derive their judicial power from the national authority of the same sovereign state as regular civil courts. Consequently, when a court martial exercises valid jurisdiction over an accused and a offense, its judicial proceedings, judgments, and acquittals carry full legal weight equal to decisions rendered by regular judicial tribunals.

2. Same Sovereign Authority
Under Article III, Section 21 of the 1987 Constitution, the guarantee against double jeopardy protects a person from being prosecuted twice for the same offense by the same sovereign power. Both military courts martial and regular civil courts derive their authority from the single sovereignty of the Republic of the Philippines. Because both judicial systems emanate from one sovereign source, an acquittal or conviction in a competent court martial constitutes a first jeopardy that bars any subsequent criminal prosecution for the same offense in a civil court.

3. Motion To Quash
Under the Rules of Court, an accused may move to quash an information on the ground that he has been previously acquitted or convicted, or the case against him was dismissed without his express consent, for the same offense. Where a defendant has been validly tried and acquitted of treason by a competent military court martial, filing a subsequent information for treason in a Regional Trial Court constitutes double jeopardy. The civil court must grant the motion to quash to enforce the constitutional prohibition.

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The questions reproduced here are the official texts of the Philippine Bar Examinations, published by the Supreme Court. They are reproduced for study purposes.The suggested answers are the author’s own.

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Where a question comes from an earlier examination, the suggested answer applies the law as it now stands, which may differ from the law in force when the question was given, and may therefore differ from what would have been the correct answer at that time. Where the difference is material, the answer notes it.The practice scoring feature measures wording overlap with the suggested answer. It is not a grade, carries no official weight, and says nothing about whether your reasoning is sound.Errors are possible. If you find one, please tell me and I will correct it.Last reviewed: October 2026