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- Military art and science[remove]7
- Military engineering7
- Fortification3
- Siege warfare3
- Military architecture2
- Military weapons2
- Architecture1
- Cranks and crankshafts1
- Crusades1
- Engineering1
- Engines of war1
- Philip VI, King of France, 1293-13501
- Siege warefare1
- Vigevano, Guido da, approximately 1280-approximately 13501