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251st Cyberspace Engineering Installation Group

military unit

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionApr 10, 2026
Entity authorityQ4632070 ↗
Source-derived summary

The United States Air Force's 251st Cyberspace Engineering Installation Group is an Air National Guard engineering installation unit located at Springfield ANGB, Ohio. It is the oldest communications/cyber group in the USAF and was originally chartered as the 251st Communications Group. The units assigned to the group compromise 47.5% of the USAF's Engineering Installation capability and 47.5% of Department of Defenses build and extend organic cyberspace infrastructure robust capability. The co-located 269th Combat Communications Squadron is also assigned to the 251st and is one of the USAF's oldest mobile communications squadrons rooted as the 1077th Signal Company Army Air Corps founded in March 1942. The group headquarters has 38 personnel assigned with a wartime mission to augment Major Command AFFOR staffs, Joint Force Commander staffs, Numbered Air Forces Warfighting Headquarters staffs or any Combatant Commanders cyber and Communications forward staff function.

Mission

The mission of the 251st is to command, organize, equip, train and administer assigned and attached forces to ensure complete mission readiness in support of emergency United States Air Force requirements, and to provide timely and reliable communications engineering and installation in support of state emergencies.

History

Headquarters, 251st Communications Group was constituted at Springfield, Ohio, on 5 October 1952. Commanded by Major Charles R. Stahl, the Headquarters had an initial strength of five people. Of the existing Air National Guard (ANG) communications groups and active duty group, the 251st is the oldest, and it is also the parent unit of two other ANG combat communications groups: The 226th Combat Communications Group in Alabama and the 254th Combat Communications Group in Texas. At its inception, the group had twelve subordinate units in Ohio, North Carolina, Missouri, Illinois, Texas, Alabama, and Arkansas.

Editorial summary

This brief starts where responsible research should: with the source description of “251st Cyberspace Engineering Installation Group” as military unit. Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA concise reference frame for defining the subject, testing terminology and identifying the institution closest to the evidence. The current lead gives the account dated anchors—1942, 1952—that can be checked directly. The selected authority fields contribute no independent date. The account is most persuasive where 251st, Cyberspace and Engineering can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the general reference register because the source frames it as military unit. Its deeper value depends on whether names, dates, institutions and citations support that framing.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Apr 10, 2026. The linked authority identifier is Q4632070. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1942 and 1952.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “251st Cyberspace Engineering Installation Group”, its source revision and the description used here.
  2. Expand the search: follow 251st Cyberspace Engineering Installation Group primary sources, 251st Cyberspace Engineering Installation Group archive and 251st research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

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Source & attribution

This entry incorporates text from “251st Cyberspace Engineering Installation Group” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.