First, a quick Hebrew lesson: In Hebrew, a pomegranate is a 'Rimon'. A grenade is a 'Rimon-Yad'...a 'Hand-Pomegranate'. Kinda funny.
https://www.jpost.com/archaeology/hand-grenade-from-1st-world-war-unearthed-in-jerusalem-656554
https://www.jpost.com/archaeology/hand-grenade-from-1st-world-war-unearthed-in-jerusalem-656554