In Portugal, archaeologists uncover mass graves from a medieval clash that rewrote European history. The evidence reveals brutal close-quarters combat and the shocking tactics that secured a nation's survival. The Forgotten Battle That Saved a Kingdom Medieval Dead | S2 E3 | Full Episode | 44:11 Forbidden Mysteries | 5.55K subscribers | 9,611 views | December 21, 2025 YouTube transcript can be processed at reformatted at textformatter.ai.