United States v. Mizgala: Article 10’s Standards — and Why a Guilty Plea Doesn’t Waive Them
Key takeaways
- Reasonable diligence, not gross negligence, is the standard for Article 10 claims — a judge who applies the wrong yardstick errs.
- R.C.M. 707’s 120-day rule is irrelevant to whether Article 10 was violated — the two protections are analyzed separately.
- Article 10 is more exacting than the Sixth Amendment, so the analysis cannot be confined to the bare constitutional factors.
- An unconditional guilty plea does not waive appellate consideration of an Article 10 claim litigated at trial.
- On its facts, Mizgala lost: 117 days of confinement survived scrutiny because the government’s explanations held up.
The case in one sentence
United States v. Mizgala, 61 M.J. 217 (C.A.A.F. 2005) fixed the legal standards for Article 10 speedy trial claims — reasonable diligence, analyzed independently of R.C.M. 707 and more exactingly than the Sixth Amendment — and held that an unconditional guilty plea does not waive the claim on appeal.
The facts: 117 days in pretrial confinement
Mizgala entered pretrial confinement on 28 February and stayed there 117 days. The government did not prefer charges until 14 May, citing among other things a wait for a police report and the relocation of the SJA office after a fire. Mizgala demanded a speedy trial on 16 April; the Article 32 was held on 22 May, charges were referred on 20 June, and at arraignment the military judge denied the defense motion to dismiss the charges for an Article 10 violation.
The problem was how the judge got there: he measured the government’s conduct against a “gross negligence” standard — a test far more forgiving than the law requires. And 117 days, standing alone, is not an extraordinary period; what made the case a vehicle for CAAF was not the length of the confinement but the analytical errors stacked beneath the ruling that excused it.
The holding: three corrections and a survival rule
CAAF affirmed the result — on this record, the government had not violated Mizgala’s speedy trial rights — but used the case to correct the analysis for every case after it:
- R.C.M. 707 is irrelevant. The 120-day rule has no place in deciding whether Article 10 was violated. Beating the administrative clock proves nothing about the statutory duty owed a confined accused.
- Reasonable diligence is the standard. Not gross negligence. The government’s conduct is measured against Kossman’s demand for diligent forward motion, not against a floor of egregious misconduct.
- Article 10 outreaches the Sixth Amendment. Because the statute is more exacting than the Constitution, a military judge may not confine the analysis to the bare Barker v. Wingo factors used for constitutional claims.
And the holding with the longest reach: an unconditional guilty plea does not waive appellate consideration of an Article 10 claim. Speedy trial rights for a confined accused survive the plea that ends most other objections — a rule that makes sense of the statute’s design, since the harm Article 10 addresses is the confinement already suffered, which no plea and no conviction can retroactively cure.
Why it matters in courts-martial today
Mizgala is the quality-control case of Article 10 law. Kossman supplies the standard and Cooley shows it winning, but Mizgala is what defense counsel cite when a judge drifts — toward the 120-day arithmetic of R.C.M. 707, toward a forgiving negligence test, or toward a purely constitutional framing. Each drift is legal error, and Mizgala names all three.
It also travels with a companion rule from United States v. Cooper, 58 M.J. 54 (C.A.A.F. 2003) — decided two years earlier — that keeps the duty alive deep into the case:
“We therefore hold that the Article 10 duty imposed on the Government immediately to try an accused who is placed in pretrial confinement does not terminate simply because the accused is arraigned.”United States v. Cooper, 58 M.J. 54 (C.A.A.F. 2003)
Together the two cases define Article 10’s durability: the duty survives arraignment under Cooper, and the claim survives an unconditional guilty plea under Mizgala — a combination no other pretrial protection matches.
The waiver holding changes how pleas are advised. In most respects an unconditional guilty plea extinguishes pretrial complaints, which is why the waiver rules for motions matter so much. Article 10 is the exception: a claim litigated and denied at trial rides through a guilty plea to the appellate courts. For a confined client weighing a deal, that means the speedy trial motion is worth filing even when a plea is likely — preserving it costs nothing and can survive everything.
What this means if you were confined and are considering a plea
Pleading guilty does not have to bury what the government did to you before trial. If you sat in pretrial confinement while your case idled, an Article 10 motion should be litigated before pleas are entered — because under Mizgala, that claim survives an unconditional guilty plea and can still win relief on appeal. The sequencing is everything: a motion never filed preserves nothing. Talk to counsel about the speedy trial record before you sign any agreement.
Where this case shows up in our guides
- Article 10: speedy trial for service members in confinement — Mizgala’s standards in the full doctrine.
- Speedy trial in the military — why the four protections are analyzed separately, as Mizgala requires.
- Pleading guilty in a court-martial — what a plea waives, and the Mizgala exception.
- Which motions are waived if not raised — the preservation rules around the exception.
Practitioner’s note
We file the Article 10 motion in every confined case where the record supports it — including cases plainly headed for a plea. Mizgala is the reason: the claim survives the plea, but only if it was litigated, so the motion is cheap insurance with appellate reach. And when we argue these motions, Mizgala is open on the table — the moment the government leans on “we were inside 120 days” or the court reaches for a negligence framing, we have a unanimous correction from CAAF to read back. Precision about the standard is half the fight.
Frequently asked questions
What standards did Mizgala establish for Article 10 claims?
Three corrections: the R.C.M. 707 120-day rule is irrelevant to the Article 10 analysis; reasonable diligence — not gross negligence — is the standard for measuring the government's conduct; and because Article 10 is more exacting than the Sixth Amendment, a judge may not limit the analysis to the bare Barker v. Wingo factors.
Does pleading guilty waive an Article 10 speedy trial claim?
No. CAAF held in Mizgala that an unconditional guilty plea does not waive appellate consideration of an Article 10 claim. The practical requirement is preservation: litigate the motion at trial before pleas are entered, so there is a ruling and a record for the appellate courts to review.
Did Mizgala actually win his case?
No — CAAF affirmed the denial of his motion, concluding on the record that the government had not violated his speedy trial rights during his 117 days of pretrial confinement. The case's importance lies in the standards it corrected and the waiver rule it announced, not in its outcome for the appellant.
Why doesn't the 120-day rule matter to an Article 10 claim?
Because they are different protections with different tests. R.C.M. 707 is an administrative counting rule satisfied at arraignment; Article 10 is a statutory duty of reasonable diligence owed specifically to an accused in pretrial arrest or confinement. A government comfortably inside 120 days can still fail Article 10's more demanding standard.
About the attorneys behind this guide
Michael Waddington, Civilian Military Defense Lawyer
Michael Waddington has litigated Article 10 motions for more than 25 years, and Mizgala is the case he uses to keep those motions on the correct legal rails — reasonable diligence, analyzed apart from the 120-day arithmetic. A former Army prosecutor and defense counsel who has defended confined service members worldwide, he files the speedy trial motion even in cases headed for a plea, precisely because Mizgala lets a litigated claim survive to appeal.
Alexandra González-Waddington, Founding Partner
Alexandra González-Waddington, founding partner of Gonzalez & Waddington, has spent more than 20 years advising confined service members at the intersection Mizgala governs — where a possible plea meets an unlitigated speedy trial claim. In UCMJ cases across every branch she has sequenced motions and pleas to preserve her clients’ appellate rights, and she legally reviewed this summary against the Deskbook’s speedy trial chapter and CAAF precedent.
Talk to a civilian court-martial defense lawyer today
Gonzalez & Waddington defends Soldiers, Sailors, Airmen, Marines, Guardians, and Coast Guardsmen worldwide — in UCMJ investigations, courts-martial, Article 15/NJP actions, GOMOR rebuttals, administrative separation boards, and Boards of Inquiry. We defend the whole case: the investigation, the trial, the administrative fallout, and the long-term consequences to your rank, retirement, clearance, and discharge.
Sources for this guide include the Uniform Code of Military Justice, the Manual for Courts-Martial (2024 ed.), the Rules for Courts-Martial, the TJAGLCS Criminal Law Deskbook, and the cited decisions of the Court of Appeals for the Armed Forces and the service Courts of Criminal Appeals. It is attorney advertising and general legal information — not legal advice, and reading it does not create an attorney–client relationship. Every case turns on its own facts. Service procedures vary; Army references (AR 27-10) are noted where used.