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.
Zakay, 21, was promoted posthumously from the rank of lieutenant to captain.
Bloch was 32 years old and is survived by his wife, Sapir, who is eight months pregnant, along with his parents and seven brothers and sisters.
IDF announces deaths of four fallen soldiers in northern Gaza Strip; Military's strategy in Gaza still unclear.
Yaacov is remembered by friends and family as a straightforward, honest leader.
The four soldiers served in the 8207th Battalion in the 228th Brigade.
"We hope to be worthy of the sacrifice of Barak," said Petah Tikvah Mayor Rami Greenberg.
He is the second member of his Kibbutz killed in action; the two fell five hours after each other.
Captain (Res.) Alon Safrai had been studying medicine at the Technion and his classmates said his death was "a loss for all the patients he was meant to have."