Julius Caesar's engineers built a bridge across the Rhine in just 10 days, using local lumber, it was estimated to be 140 to 400 m (roughly 460 to 1,300 ft) The Roman army was once distinguished by its focus on *construction*, and it would be amazing if that were the case today
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they have quite a lot of capability, actually, I just mean, what if it were the focus,
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United States Army Corps of Engineers does quite a lot of this. They're responsible for quite a lot of American waterways.
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