Every entry on DA Form 3126 exists because a record system needs it in writing. The form's official title is APPLICATION AND CONTRACT FOR ESTABLISHMENT OF A JUNIOR RESERVE OFFICERS` TRAINING CORPS UNIT, and it is raised whenever an office must application and contract for establishment of a junior reserve officers` training corps unit (s&i, hqda, attn: tapc-opp-p, 200 stovall st., alexandria, va 22332-0418) in a way that survives the departure of everyone involved. Memory does not transfer between assignments; a filed document does. The edition dated 04/01/2023, status ACTIVE, is what stands here, spread across 4 page(s) and about 200 fields — a count that reflects how much detail the receiving system requires, not how much the drafter wishes to give. A later edition has since been published, which is why this one remains: records executed against it must still be readable in the terms they were written.
Two offices stand behind the form, and the distinction between them explains most of what follows. G-1 is the proponent: it decides what the form asks and revises it when the underlying process changes. AR 145-2 is the prescribing authority: it decides when the form is raised at all and where the completed document travels. Content and occasion are separated deliberately, so that a change in procedure does not require redesigning the page.
Retrieval governs the order of entry. The head of the form takes name, identification number, unit and date, and those values become the handles by which the record is found later — the substantive blocks are never searched on. This is why the spelling must match official records exactly rather than approximately.
Tab order is not a convenience feature; it was fixed when the form was built and generally traces the page, so following it produces the sequence the designer intended and leaves fewer gaps than a mouse. Exclusive option groups clear the previous selection because the record is not permitted to hold two contradictory answers. Single-line fields do not wrap for the same reason the layout is fixed: the printed page has to fall in known positions, so text past the field width is cut at the margin even though the screen still shows it whole. Overflow belongs in remarks or on a continuation, where there is room designed for it. And an inapplicable field is marked rather than skipped, since a blank tells a later reader nothing about whether the question was considered.
Signing is the act that makes the document evidence, and until it happens the entries are only a proposal. Additional signatures — reviewer, approver, witness — each stand for a separate judgement, dated when applied so the record shows who accepted what and in what order. The common faults all damage that record in the same way: a blank mandatory field breaks the chain of required answers, swapped digits in an identification number detach the document from its subject, an inverted day and month misplaces it in time, and stale data from a reused copy states things nobody meant to state.
Personal information may not be gathered silently, and the Privacy Act statement is how that obligation is met on paper: it names the collection authority, the purpose, the routine uses and whether disclosure is mandatory. Because it exists to inform a decision, it belongs before the fields it covers rather than after them. A filled copy then holds personal data and is stored and transmitted under the corresponding safeguards.
Download the form
The published formats — PDF — reflect the range of places a form gets filled in. Where there is a computer, the fillable pdf supplies live fields that keep entries positioned and readable. Where there is not, the printable pdf gives the identical page as flat artwork for pen entry. The distinction is one of setting rather than of authority; the page is the same document in both.
Where a file opens matters more than it appears to. A browser will display a pdf, but browser viewers were built to read documents, and some accept keystrokes into fields they never intended to store — the entries are gone at tab close, without warning, because saving was never part of what that viewer does. A dedicated reader is built around the file's own structure and keeps what you enter.
No charge and no account apply: these are published documents, and access to them is not something a distributor is entitled to price.
What the form asks for
- AAOther
- AARegion
- AAState
- CRJOINT
- CRJOINT_1
- CRROOMS
- CRROOMS_1
- CRSTGCAP
- CRSTGCAP_1
- ContentArea1
- DAAVAIL
- EQPAVAIL
- FRNGPNTS
- GYMSIZE
- Group1
- Group2
- JURSDCTN
- LOCATION
- Line6
- NOOFCRMS
- NOOFCRMS_1
- NOOFCRMS_2
- NOOFCRMS_3
- NOOFCRMS_4
The routing in AR 145-2 decides where the document goes — a named office, the administrative channel, or the individual's file — and the records schedule for the series decides how long it stays. Neither is a local judgement, because a record system loses its meaning if each office keeps things for its own preferred interval. Copy the form before submitting it.
Series and number are how the DA series signals which documents belong together, and the grouping follows real process boundaries: a shared proponent or directive usually means a shared purpose. A form cited on the face of another is part of that same transaction, and continuation sheets, covers and transmittals complete it.
An edition marks the form at a point in a process that keeps moving, and the date printed on the page is what distinguishes one from another. Since a saved file never announces its own obsolescence, compare its date against the current edition before using it again. Prior executions remain valid: the change applies forward, and a record is read against the edition it was written under.
It is worth being plain about what this page is within all of the above. The files are reproductions of published Department of the Army documents, offered for download by a site with no official standing and no part in issuing anything. That matters because the machinery described here — proponency, prescribing directives, records schedules — runs entirely elsewhere. Nothing written here is legal advice, and no statement can be made about whether an office will accept a given document. G-1 and the administrative office servicing your unit answer questions of entry, requirement and eligibility, and they are the ones positioned to.
Questions and answers
- What is DA Form 3126?
- APPLICATION AND CONTRACT FOR ESTABLISHMENT OF A JUNIOR RESERVE OFFICERS` TRAINING CORPS UNIT
- Which edition is current?
- 04/01/2023
- Who is responsible for this form?
- G-1
- In which formats can it be downloaded?
- PDF, PDF