An ancient Crusader encampment has been uncovered in the area of the Tzipori Springs in the Galilee. Also, an Israeli scuba diver found a meter-long Crusader sword on the seabed off the Carmel Coast. The Crusaders initiated several military campaigns in the Middle East between the 11th and 13th centuries.

https://www.jpost.com/archaeology/first-archaeological-evidence-for-crusader-camp-found-in-israel-682262

https://www.jpost.com/archaeology/900-year-old-crusader-sword-found-by-scuba-diver-off-israels-coast-682306