# The 1527 fortification book is a completed military-engineering text

Date: 1527

## The fact

A printed fortress-book is a security-industrial path of medium confidence. The dated public instrument is stored under 1527-01-01. [Albrecht Dürer](/people/albrecht-durer) did not operate this later page as a civil-registry autograph.

It is one event.

## Context

Shared institutions, unnamed crews, and later editors remain in the record and do not erase a documented heading.

Albrecht Dürer Shared work with other named actors remains in the record.

Albrecht Dürer’s documented role is bounded by other offices and collaborators named in the sources below. Sharing a field with them is not a reason to drop a documented act, and it is not a reason to assign later consequences done in the name after death.

Conventional 1471–1528. Dated instruments are museum print pages, the Nuremberg house, and treatise editions.

Named person as heading of the dated public instrument. Later editors, museums, printers, or offices share publication. Complex where later carriers are the surviving public file.

## Evidence and sources

Dürer treatises — later public-domain English and Cambridge Dürer and Northern Renaissance studies independently describe this instrument.

Official or archival record: Dürer treatises — later public-domain English (https://www.gutenberg.org/ebooks/22051; Project Gutenberg).

## Significance

A printed fortress-book is a security-industrial path of medium confidence.

## What is established and what is not

Established as a dated public record of this instrument.

What would change the picture: a contradictory original with a different date or name, or a measured series that can be argued, with lag and alternatives, as a consequence of this instrument rather than of later institutions.

What would change the picture: a contradictory original with a different date or name, or a measured series that can be argued, with lag and alternatives, as a consequence of this instrument rather than of later institutions.

The date is the date of this instrument, not a licence to back-date every later harm or benefit.

Established here: a sourced, dated public instrument with a named contribution by Albrecht Dürer.

They are not a public rating.

Albrecht Dürer did not file a later UNESCO form, a later Loeb colophon, or a later museum label as a personal act. A portrait or conventional bust is not this mechanism. Allegation, reconstruction, and established occurrence stay distinct.

## People

- Albrecht Dürer: https://factrail.ai/people/albrecht-durer

## Drivers

- Energy Security: https://factrail.ai/drivers/energy-security

## Sources

- https://www.gutenberg.org/ebooks/22051
- https://www.cambridge.org/core/

## Methodology

https://factrail.ai/methodology

Canonical: https://factrail.ai/facts/adr-treatise-fortification