# Leonardo enters Ludovico Sforza's Milan service as painter-engineer

Date: 1482

## The fact

In 1482 Leonardo entered Ludovico Sforza's Milan service as painter-engineer. Encyclopaedias date the move. It is a court office, not a republic. Leonardo da Vinci's documented role is: He took Sforza court service offering military and hydraulic engineering as well as painting. Ludovico paid; Leonardo did not rule Milan.

## Context

The famous letter listing war-machines is a job application in the received file. Sharing patronage with Ludovico is required. The setting of Leonardo enters Ludovico Sforza's Milan service as painter-engineer is the public file around 1482-01-01. Shared offices, unnamed crews, printers, or later editors may appear without becoming this instrument. Driver [industrial-policy-activism](/drivers/industrial-policy-activism) is attached because the significance names a mechanism from this act, not because a standing list needed coverage.

Shared responsibility is part of Leonardo enters Ludovico Sforza's Milan service as painter-engineer. Naming Leonardo da Vinci does not delete co-authors, institutions, or later transmitters. The lag from 1482-01-01 to any measured indicator is not treated as zero. Alternative explanations — weather, other armies, later statutes, or independent cultural change — remain live where the sources do not close them.

## Evidence and sources

Official locator: Britannica — Leonardo, Milan and Sforza at https://www.britannica.com/biography/Leonardo-da-Vinci (Encyclopaedia Britannica). Independent locator: Met Heilbrunn — Leonardo in Milan at https://www.metmuseum.org/toah/hd/leon/hd_leon.htm (Metropolitan Museum of Art). Official carrier: Britannica — Leonardo, Milan and Sforza (https://www.britannica.com/biography/Leonardo-da-Vinci; Encyclopaedia Britannica). Independent carrier: Met Heilbrunn — Leonardo in Milan (https://www.metmuseum.org/toah/hd/leon/hd_leon.htm; Metropolitan Museum of Art).

Official or archival record: Britannica — Leonardo, Milan and Sforza (https://www.britannica.com/biography/Leonardo-da-Vinci; Encyclopaedia Britannica).

## Significance

Improving path from Leonardo enters Ludovico Sforza's Milan service as painter-engineer on 1482-01-01. A court engineer office is an industrial-method path. The welfare reading on this path is improving.

## What is established and what is not

Established: a sourced public record of Leonardo enters Ludovico Sforza's Milan service as painter-engineer under 1482-01-01 for Leonardo da Vinci. Established: a sourced public record of Leonardo enters Ludovico Sforza's Milan service as painter-engineer under 1482-01-01.

Later competitions, monuments, translations, UNESCO listings, museums, and adaptations are not converted into extra lifetime acts.

If a number is not in the two records named above, it is not supplied here.

Confidence is stated on the impact path, not hidden in adjectives. Military designs are separate cost rows. Do not twin with Last Supper. Mixed effects of Leonardo enters Ludovico Sforza's Milan service as painter-engineer are separate paths.

The attached driver is industrial-policy-activism. The welfare reading used in this dossier is improving. That reading is an impact-path choice, not a property stored on the Fact itself.

## People

- Leonardo da Vinci: https://factrail.ai/people/leonardo-da-vinci

## Drivers

- Industrial-Policy Activism: https://factrail.ai/drivers/industrial-policy-activism

## Sources

- https://www.metmuseum.org/toah/hd/leon/hd_leon.htm
- https://www.britannica.com/biography/Leonardo-da-Vinci

## Methodology

https://factrail.ai/methodology

Canonical: https://factrail.ai/facts/ldv-sforza-1482