Transcription: If you want to break through the walls of an enemy fort, the weakest spot is the gates. To get to the gates, which are very well defended, the main could advance forward in this testudo and in the middle of it would march engineers. They would carry entrenching tools, pickaxes and so on. And when the testudo reached the gates, the engineers could come forward and start hacking away at the gates or on their hinges to weaken them. And then of course the troops could burst through.
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