Sgt. Maj. (Res.) Malkia Gross, 25, from Susya, fell in combat in the southern Gaza Strip on Saturday, the IDF announced later that day.
Gross was a soldier in the 9212th Battalion of the 205th "Iron Fist" Brigade. He was operating in the area of Rafah.
He was posthumously promoted to Sgt.-Maj.
Investigating the circumstances of Malkia's death
Gross fell in an operational accident in a tank during an operation in Rafah, according to Ynet. The IDF stated that the circumstances of the accident are being investigated.
The IDF has been focusing its efforts on the area of Rafah in the southern Gaza Strip. The Israeli military estimates that dismantling the Rafah Brigade will not take much longer than a couple of weeks.
On Friday, the IDF announced the deaths of two additional fallen reserve soldiers who were killed by mortar fire in the Gaza Strip.
The military said that three soldiers were severely wounded in the same incident. The Alexandroni Brigade unit was ambushed on Thursday afternoon by Hamas gunmen as they were moving on foot along the Netzarim corridor.
Last Saturday, eight soldiers were killed after their armored vehicle exploded.