Engineering reputation did not guarantee German infrastructure investment

Did Germany invest comprehensively in infrastructure before the Second World War?

In this assessment, no; the Kiel Canal was the major exception to otherwise inadequate sustained investment.

This brief assessment challenges Germany's reputation for engineering-led preparation. Industrial and infrastructure investment did not match the image of a uniformly advanced system. The Kiel Canal is the major counterexample, after which the programme is described as having largely stalled. A follow-up distinguishes upgrading and rebuilding a strong inherited railway network from creating most of it during the interwar rearmament period. The categorical conclusion separates technological prestige from broad new productive investment.