Since U.S. military judges (all of whom go through training at The Judge Advocate General's School and Legal Center at Charlottesville, Virginia) may try cases in any service, see R.C.M. 201(e)(4), and since the trial judiciaries could coordinate cross-service assignments if they wished, it is worth looking at all-service caseload numbers for general and special court-martial trials. The data below are drawn from the 2022 Art. 140a, UCMJ, TJAG reports. Reserve judges are counted as 1/12 of an active duty judge on the premise that they perform a month's duty per year.
Army 615 25.8
Air Force 314 18.25
Navy & Marines 387 28.1
Coast Guard 14 10.0
Total 1330 82.15
Purple caseload/judge/year 16.19
Purple caseload/judge/month 1.35
Comments welcome, as always. Real names only, please.