Jambiya

Jambiya is arabic term for dagger, one of Arabia's culture daggers. which describe a specific type of dagger with a short curved blade and a medial ridge. Though the term janbiya is used in various Arab countries and India, it is most closely associated with the people of Najran in Saudi Arabia, and Yemen.

you can get this Dagger which in this case you pre-purchase Battlefield 1 with one of the many packs along with Lawrence of Arabia Pack. http://battlefield.wikia.com/wiki/Battlefield_1:_Lawrence_of_Arabia_Pack