Sturmpanzerwagen Oberschlesien

Profile drawing of the Sturmpanzerwagen Oberschlesien proposal. The vehicle remained a design proposal, so this is an illustration rather than an operational photograph.Salmanazar via Wikimedia Commons; released into the public domain.Image source

Project, not operational tank

Sturmpanzerwagen Oberschlesien was a late-1918 German assault-tank project intended to move beyond the large crew and heavy arrangement of the A7V. The published descriptions assembled in the cited sources outline a smaller vehicle with a driver toward the front, a central rotating turret, and an engine at the rear. No completed production tank or operational service is established. Sources

The available evidence places the project between design, wooden-model presentation, and incomplete-prototype work. Statements that two prototypes were ordered remain distinct from claims that two running tanks were completed. The name belongs in the encyclopedia because the proposed vehicle was a significant part of late-war tank development, not because a service introduction can be assigned to it. Sources

Oberschlesien I and II, and the similarly named Wagen I and II running-gear proposals, are not consistently distinguished in published descriptions. A7V, A7V-U, LK, K-Wagen, and Orionwagen are comparison or component-development connections, not interchangeable names for Oberschlesien. Sources

Requirement, selection, and changing proposals

The account frames the project against Germany's limited wartime tank production and the practical shortcomings of the A7V. The proposed answer was a lighter, faster assault vehicle with a smaller crew and a more conventional separation of driving, fighting, and engine spaces. This explains its intended role without demonstrating that it would have solved the industrial problem of producing tanks in quantity. Sources

Published summaries describe selection activity, wooden models, requests to reduce aspects of the design, and late changes to the running gear. One proposed arrangement is associated with Orion running gear; a later alternative is associated with the A7V system. The source chronology includes model presentations in 1918 and late-October or November redesign activity, but the exact relationship between all the names and orders remains under review. Sources

The Armistice arrived before the program produced a fielded tank. A model could communicate the layout, and an order could authorize work, without resolving suspension reliability, engine integration, weapon mounting, manufacture, and crew training. The development record is therefore not a near-complete combat history waiting for a different end to the war. Sources

Projected hull, turret, and weapons

The general arrangement placed a rotating cannon turret above a central fighting compartment, with driving and powerplant spaces separated fore and aft. Track runs were lower than the enclosing rhomboidal outline of British heavy tanks. The design is commonly described as carrying five crew with relatively light armor, but those are projected characteristics rather than measurements of an accepted production vehicle. Sources

A fourteen-millimeter armor figure recurs in the secondary summaries. The available evidence does not establish a complete plate schedule, certified material specification, or ballistic test record. Similarly, a drawn turret and an intended field of fire do not prove the details of a completed turret race, powered mechanism, sight, or ammunition installation. Sources

The main weapon is disputed. The accounts record references to 3.7 cm and 5.7 cm guns and to a proposed 5.2 cm tank gun. These are conflicting or evolving proposals, not three confirmed service variants. Two machine guns are commonly proposed as secondary armament, while exact mounting details remain uncertain. Ammunition capacity and exact optical equipment are not established by the cited evidence. Sources

Engine, tracks, and the difference between targets and tests

An Argus aircraft-derived gasoline engine is associated with the design. Published accounts give descriptions around 180 PS and an English-language figure near 190 horsepower. These details remain unconfirmed in the cited evidence. A projected mass of approximately nineteen metric tonnes likewise belongs to the proposed configuration. Sources

Running gear remained a live design question. The precise relationship between Orion-related and A7V-related alternatives remains uncertain. The source does not demonstrate a finalized production suspension, gearbox, or track system tested through a complete endurance program. Sources

The discrepancy is preserved. Neither figure is evidence of a measured operational maximum. The same caution applies to an estimated range: a later reference estimate does not substitute for a fuel-capacity record and a trial result. Sources

Five-man crew descriptions and separated compartments suggest a different working arrangement from the A7V, but no completed-vehicle ergonomic or reliability test supports a definitive assessment. Advantages in visibility, maintainability, or crew effectiveness remain proposed benefits, not demonstrated battlefield performance. Sources

Manufacture, evaluation, and historical significance

The record concerns an Imperial German development program, not an operational operator list. No completed production series, export service, captured use, or combat retirement is established. Reported models and partially built structures were not completed service tanks. Sources

The absence of a completed, fielded vehicle is also the central limit on comparison. The project can illustrate a change in design thinking toward a smaller turreted layout, but it cannot supply a combat-loss record or prove superiority over tanks already operating in 1918. Nor does a later resemblance establish direct ancestry to interwar or Second World War German vehicles. The account explicitly leaves that influence chain unproven. Sources

The most useful historical question is how far design recognition had advanced before industry and time ran out. Sources

Schematic and reconstruction safeguards

The reconstruction is not an original German drawing or a photograph of a completed prototype. Its details are illustrative rather than proof of the proposed vehicle’s final engineering. Sources

The account did not locate a verified photograph of a completed vehicle. That result does not prove that no photograph of wooden models, factory work, or contemporary drawings exists. A separately listed modern public-domain profile is another visual lead, not primary engineering evidence. Sources

Sources and further reading

Background reading and references. Each photograph has its own source and credit.

Project, not operational tank

Requirement, selection, and changing proposals

Projected hull, turret, and weapons

Engine, tracks, and the difference between targets and tests

Manufacture, evaluation, and historical significance

Schematic and reconstruction safeguards

Sources and further reading

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