First Lieutenant Natan Cohen, a 23-year-old platoon commander in the Armored Corps, is named as the second IDF fatality from Tuesday evening.
No funeral date has been announced for Cohen, a resident of Modiin.
Earlier, the army announced the death of Dmtri Levitas, an officer in the Armored Corps, in Gaza fighting.
Three IDF soldiers were killed in fighting Tuesday.
The IDF death toll is now 29, with one more soldier missing and presumed killed.