How WWI field guns were shoved into tanks without modification

Published on April 13, 2026
Duration: 1:05

This video discusses the unconventional method of mounting WWI French 75mm field guns into tanks, specifically the Saint-Chamond. The primary focus is on how the original traverse mechanism, which uses a worm gear to slide the entire gun assembly left and right on its axle, was retained without modification when installed in the tanks. This approach, while functional for field artillery, presented unique challenges when integrated into armored vehicles.

Quick Summary

WWI French 75mm field guns, such as the Mle 1897, featured a unique lateral traverse mechanism controlled by a worm gear that slid the entire gun assembly on its axle. This system, with the rear spade acting as a pivot, was notably not modified when these guns were installed into tanks like the Saint-Chamond.

Chapters

  1. 00:00Unique Windage Mechanism
  2. 00:20Worm Gear Traverse Explained
  3. 00:38Goofy Tank Installation
  4. 00:42Unmodified Field Guns in Tanks
  5. 00:56Later Model 1897 in Saint-Chamond

Frequently Asked Questions

How did WWI French 75mm field guns achieve lateral traverse in tanks?

WWI French 75mm field guns, like the Mle 1897, used a unique lateral traverse system where the entire gun assembly slid left and right on its axle. This was controlled by a worm gear, with the gun's rear spade acting as a pivot point.

Were the Mle 1897 field guns modified before being put into WWI tanks?

No, during WWI, France installed Mle 1897 field guns into tanks, such as the Saint-Chamond, without modifying their original traverse mechanism. The wheels were removed, and the entire gun assembly was bolted directly into the vehicle.

What was the primary mechanism for windage adjustment on the Mle 1897 field gun?

The windage adjustment on the Mle 1897 French 75mm field gun was achieved by sliding the entire gun assembly laterally on its axle, rather than pivoting the barrel. This movement was controlled by a worm gear system.

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