The baby, named Eitan Israel, is the nephew of Staff-Sergeant-Major (res.) Gilad Elmaliach, age 30, was killed in southern Lebanon on October 26.
Asulin fell alongside three other soldiers from the Kfir Brigade on Tuesday morning, the IDF announced.
Orr leaves behind two older brothers and one younger sister, Ynet reported. Katz received a certificate of distinction twice during his military service.
Staff Sergeant Gary Lalhruaikima Zolat, 21, from Afula, was among three other IDF soldiers killed in an explosion in northern Gaza.
Fridman was in combat in Jabalya under the command of the Givati Brigade's combat team and fell after an anti-tank missile was fired at the force.
Shabtay was severely wounded during combat in Lebanon on October 26, and succumbed to his wounds on Friday.
In the same incident, an additional soldier from the Shaked Battalion was severely wounded.