Definition
A court of inquiry is a formal investigative tribunal—not a trial court—convened to examine specific transactions, accusations, or imputations, typically within a military context. It does not adjudicate guilt or impose punishment; its function is preliminary and fact-finding in nature.
Two distinct traditions govern the term:
1. In English law: A tribunal occasionally appointed by the Crown to determine whether further proceedings against an officer or soldier before a court-martial are warranted. Bouvier also notes a secondary English usage: a court for hearing complaints brought by private soldiers.
2. In American law: A tribunal constituted under the articles of war (now the Uniform Code of Military Justice and its predecessors) with authority to inquire into the nature of any transaction, accusation, or imputation against any officer or soldier. It functions as a fact-finding body whose findings may inform—but do not substitute for—formal court-martial proceedings. Critically, a court of inquiry in American military law cannot itself impose discipline; it gathers evidence and reports conclusions.
Common Confusion
A court of inquiry is frequently confused with a court-martial. The distinction is fundamental. A court-martial is a criminal tribunal with jurisdiction to try military personnel and impose punishment, including imprisonment, discharge, or death. A court of inquiry has no such jurisdiction. It investigates; it does not convict. Findings from a court of inquiry may lead to a court-martial, but they are not equivalent to one. Researchers encountering both terms in military records or historical statutes should not treat them as interchangeable.
Why It Matters in Research
The term carries different weight depending on era and jurisdiction, and conflating its English and American usages will mislead research.
In English sources, the crown's power to appoint a court of inquiry functioned as a gatekeeping mechanism—a pre-proceeding inquiry before the machinery of court-martial was deployed. Bouvier's citation to Simmons on Courts Martial (§ 341) indicates this had a recognized procedural role in military law treatises of the nineteenth century. Researchers working with British military records or colonial-era materials should treat courts of inquiry as preliminary proceedings whose records may be filed separately from court-martial records.
In American sources, the articles of war were the controlling authority through much of the nineteenth and twentieth centuries, replaced by the Uniform Code of Military Justice in 1950. Any research into American courts of inquiry across that boundary must account for the statutory transition. Pre-1950 sources reference the articles of war; post-1950 sources reference the UCMJ (10 U.S.C. § 935 governs courts of inquiry under current law). The procedural rules, composition requirements, and evidentiary standards changed with the UCMJ's enactment.
A practical trap: courts of inquiry were also used in American civilian contexts, particularly in the nineteenth century, by state legislatures or governors to investigate public matters—scandals, disasters, or official misconduct. These civilian courts of inquiry are distinct from military ones and operated under state authority, not federal articles of war. A researcher encountering the term in a non-military state document should not assume military procedure governs.
Finally, the Black's Law Dictionary (2nd Ed.) entry is partially corrupted in the available text (note the typographical artifact "BL.Law Dict.(2p Ep.)—19 289"), which is a compositor's running header that intruded into the definition. Researchers using the second edition should be aware that this entry breaks off and may be incomplete in some reprints.
Historical Dictionary Support
All three historical sources agree on the basic bifurcation: English and American variants of the court of inquiry serve related but not identical functions. Both Black's editions and Bouvier align in defining the English version as a Crown-appointed body that precedes or informs court-martial proceedings, and the American version as a statutory body under the articles of war.
Bouvier adds the most nuance, noting the secondary English use—hearing private soldiers' complaints—that the Black's editions omit. This suggests Bouvier was drawing from a broader range of English military law sources, consistent with his citations to Simmons and Moz. & W. (Mozley and Whiteley's Law Dictionary).
What the historical dictionaries collectively miss: none addresses the civilian applications of the term, which were meaningful in American state practice. Nor do they anticipate the UCMJ transition, which is expected given their publication dates. Researchers should supplement these entries with post-1950 military law sources when the question involves modern American practice.
Jurisdictional Note
In modern American federal law, courts of inquiry are governed by the Uniform Code of Military Justice and apply to all branches of the armed forces. State-level courts of inquiry—used in some jurisdictions to investigate law enforcement conduct or other public matters—operate under separate state statutory authority and vary considerably in procedure, composition, and binding effect. Do not assume federal military procedure applies to state-convened courts of inquiry.