Inside 69 Courts-Martial at Mayport, Florida, 2019–2023
Mayport, Florida tried 69 courts-martial from 2019 to 2023. Of those cases, 48% were contested, compared with 31% across the Navy and Marine Corps. Article 134, the general article, appeared in 28% of cases with listed charges, compared with 18% service-wide.
Understanding Trends in Military Practice · 7 min read
Trends › By Installation › Mayport, Florida › 2019–2023
Short answer: Mayport, Florida tried 69 courts-martial from 2019 to 2023. Of those cases, 48% were contested, compared with 31% across the Navy and Marine Corps. Article 134, the general article, appeared in 28% of cases with listed charges, compared with 18% service-wide. Of 33 contested cases, 11 ended in a full acquittal (33%), compared with 29%.
Which Charges Were Most Common?
Of 69 records, 67 list the charges. Article 134 appeared in 19 cases (28%), compared with 18% service-wide. Attempts under Article 80 appeared in 11 cases (16%), compared with 9%. Assault under Article 128 also appeared in 28% of cases, about the same as the 31% service-wide.
Some charges appeared less often than elsewhere. Drug charges under Article 112a appeared in 12% of cases, compared with 25%. Orders violations under Article 92 appeared in 10%, compared with 18%. One case can include several articles, so the shares overlap.
| UCMJ Article | Cases | Share here | Share, all Navy and Marine Corps cases in those years |
|---|---|---|---|
| Art. 128 Assault | 19 | 28% | 31% |
| Art. 134 General article | 19 | 28% | 18% |
| Art. 80 Attempts | 11 | 16% | 9% |
| Art. 120 Rape and sexual assault | 8 | 12% | 14% |
| Art. 112a Wrongful use, possession of controlled substances | 8 | 12% | 25% |
| Art. 92 Failure to obey order or regulation | 7 | 10% | 18% |
| Art. 120b Rape and sexual assault of a child | 5 | 7% | 7% |
| Art. 109 Property other than military; waste, spoilage, destruction | 3 | 4% | 1% |
Conviction Rates by Charge
Every Article 80 case ended in a conviction on that article (11 of 11), with a median confinement of 11 months. Article 134 cases ended in a conviction on that article 95% of the time (18 of 19), with a median of 1.5 years.
Assault cases had the lowest conviction rate among the top charges: 11 of 19 (58%), with a median confinement of 7 months. Article 120, rape and sexual assault, ended in a conviction on that article in 4 of 8 cases, with a median of 1.5 years.
The guilty plea rate also differed by charge. Article 134 cases ended in a guilty plea 58% of the time (11 of 19), the most among the top charges. Article 128 cases ended in a guilty plea 26% of the time (5 of 19). The records do not show why an accused pleaded guilty or contested the charges.
| Article | Cases charging it | Convicted of it (share) | Median confinement when convicted of it |
|---|---|---|---|
| Art. 128 Assault | 19 | 11 (58%) | 7 months |
| Art. 134 General article | 19 | 18 (95%) | 1.5 years |
| Art. 80 Attempts | 11 | 11 (100%) | 11 months |
| Art. 120 Rape and sexual assault | 8 | 4 (4 of 8) | 1.5 years |
Contested Cases and Full Acquittals
A case is contested when the accused pleads not guilty to at least one charge. At Mayport, 33 accused contested the charges and 36 pleaded guilty. The contested share was 48%. Across the Navy and Marine Corps in those years, it was 31%.
Of the 33 contested cases with a verdict, 11 ended in a full acquittal (33%). That is higher than the 29% service-wide. Another 5 (15%) ended in a partial acquittal, meaning not guilty of at least one charge or specification but guilty of another.
Confinement After Conviction
Of 58 convictions, 49 included confinement. The median confinement was 6 months, the same as in the Navy and Marine Corps. A quarter of the confinement sentences were 1.5 years or longer. Sentences longer than one year were 16 of 58 convictions (28%), compared with 24%.
These are adjudged sentences, announced at trial before any plea-agreement cap, clemency, or appeal. They cover every charge in the case.
| Adjudged confinement | Convictions | Share here | Share, the Navy and Marine Corps as a whole |
|---|---|---|---|
| No confinement | 9 | 16% | 17% |
| Under 6 months | 20 | 34% | 35% |
| 6 months to 1 year | 13 | 22% | 24% |
| More than 1 year, under 5 years | 14 | 24% | 19% |
| 5 years or more | 2 | 3% | 5% |
Court Level
General courts-martial were 59% of cases (41 of 69). Their median confinement was 1 year. The 28 special courts-martial had a median confinement of 2 months. The contested shares were about the same at both levels, 49% and 46%. A special court-martial caps confinement at one year and cannot impose a dishonorable discharge.
Punitive Discharges and Rank
Of 56 convicted enlisted members, 29 received a bad-conduct or dishonorable discharge (52%). That is lower than the 63% across the Navy and Marine Corps. Of those 29, 10 were dishonorable discharges. There were 2 convicted officers or warrant officers, and 1 was sentenced to dismissal. A sentence without a punitive discharge does not rule out a later administrative separation.
Junior enlisted members (E-1 to E-4) were 57% of the accused, compared with 64% service-wide. NCOs were 40% and officers 3%.
How the 2 Periods Compare
Mayport had 97 cases in 2013–2018, about 16 a year. In 2019–2023 it had about 14 a year, counting full years only. The contested share rose from 32% to 48%. Full acquittals went from 15 of 30 contested cases that reached a verdict to 11 of 33.
The median confinement was 6 months in both periods. Punitive discharges for convicted enlisted members went from 67% to 52%. The general court-martial share went from 48% to 59%. In small groups, a few cases either way can change these figures, so they show direction, not precise measures.
| 2013–2018 | 2019–2023 | |
|---|---|---|
| Cases | 97 | 69 |
| Contested (of pleas recorded) | 32% | 48% |
| Full acquittals (decided contested) | 15 of 30 | 11 of 33 |
| Convictions with confinement | 90% | 84% |
| Median confinement | 6 months | 6 months |
| Punitive discharge (enlisted) | 67% | 52% |
| General courts-martial | 48% | 59% |
Quantico and Jacksonville
Quantico, Virginia tried 70 cases and Jacksonville, Florida tried 77 in the same years. Quantico had a lower contested share, 34%, and 0 of 13 contested cases that reached a verdict ended in a full acquittal. Jacksonville's contested share was 41%, and 16 of 31 contested cases ended in a full acquittal.
The median confinement was 6 months at Quantico and 4 months at Jacksonville. Punitive discharges for enlisted members were 60% at Quantico and 40% at Jacksonville.
| Installation | Cases | Contested | Full acquittals (decided contested) | Median confinement | Punitive discharge (enlisted) |
|---|---|---|---|---|---|
| Mayport, Florida | 69 | 48% | 11 of 33 | 6 months | 52% |
| Quantico, Virginia | 70 | 34% | 0 of 13 | 6 months | 60% |
| Jacksonville, Florida | 77 | 41% | 16 of 31 | 4 months | 40% |
Dates and Missing Information
The cases were tried between February 2019 and December 2023: 8 in 2019, 17 in 2020, 24 in 2021, 11 in 2022, and 9 in 2023. That is 3% of the 1,991 Navy and Marine Corps courts-martial in those years. Navy and Marine Corps records before December 2020 often omit the plea and forum. The records give trial dates, not offense dates. They do not include the evidence, plea terms, nonjudicial punishment, or administrative separations.
Dates and sources for the law changes mentioned here: UCMJ change timeline.
How We Counted
Every court-martial in the data tried at Mayport, Florida with a trial date in 2019–2023 (69 cases), compared with all 1,991 Navy and Marine Corps trials in those years. Dates are trial dates.
Source: public court-martial records (Article 140a, UCMJ) in Military Trial Results, data updated October 24, 2026. Definitions, sources, and known gaps: how this data was built. Errors: content@bodiesburied.com.
Related Analysis
- Mayport, Florida: Court-Martial Data and Trends (hub)
- Navy-Marine Corps Courts-Martial: Data and Trends (hub)
- By Installation (hub)
- Mayport, Florida Courts-Martial, 2013–2018: What 97 Cases Show (another period)
- Mayport, Florida, 2024–2026: Charges, Verdicts, and Sentences in 15 Cases (another period)
- Quantico, Virginia Courts-Martial, 2019–2023: What 70 Cases Show (same years, similar size)
- What Was Tried at Jacksonville, Florida, 2019–2023? 77 Courts-Martial (same years, similar size)
- Article 128 at Mayport, Florida Before and After 2019
- Did General Article Cases at Mayport, Florida Change After 2020?
- Search every case in Military Trial Results (members)
Military Judges Who Presided Over Cases at Mayport, Florida, 2019–2023
Names and links only. Each judge's record of pleas, findings, and sentences is on their Know Your Judge page, part of the Court-Martial Characters membership.
About the author. Jocelyn C. Stewart is a retired Army JAG with more than 24 years of trying courts-martial and more than 200 jury trials. She hosts Where All The Bodies Are Buried and runs the Law Office of Jocelyn C. Stewart. This analysis is for education and information only. It is not legal advice, and every case is different.