Germany was blockaded in 1918 and conquered in 1945

Who said Germany had to be bombed into submission every few decades, and was the claim accurate?

The attribution is uncertain, and the claim is inaccurate because Germany was blockaded toward collapse in 1918 and physically conquered in 1945.

The claim that Germany must be bombed into submission every few decades misstates both world wars. In 1918, blockade, economic exhaustion, and the Hundred Days offensive brought Germany close to military collapse before an invasion of its core territory. In 1945, Allied armies occupied Germany and captured Berlin. Strategic bombing assisted the defeat in each conflict, with different effects, but it was not the act that independently produced surrender. The quotation sounds more like advocacy for air power than an accurate summary of how the wars ended.