This encyphered engineering book is interesting, maybe?

[Bernd]

Ghiberti copies a lot of designs from Kyeser and Vegetius, just like Taccola. But he has a much better grasp on perspective

Look at page 195
   

Compare it to the Rosenwald 6 copy of Vegetius' De rei militari by Roberto Valturio, (1405-1475). 2nd. half of 15th century.
   
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I wonder which work precedes the other. They appear to be roughly contemporary. And copying from each other. Like Taccola did.
The armored knight on horseback is clearly a bronze sculpture standing on top of a (likely similarly bronze or stone) sarcophagus that is mimicking a basket.