Thousands of reservists have begun reporting for duty as the Israeli military presses ahead with its offensive to conquer Gaza City.
Ground forces are already pushing into the outskirts of Gaza's largest urban area, which the military has said is a stronghold of Hamas.
The city is also coming under heavy Israeli aerial and artillery bombardment, with local hospitals saying that more than 50 Palestinians have been killed in recent attacks.
The military has ordered residents to evacuate and head south immediately. The UN reports an estimated 20,000 people have complied, but almost a million remain in the area.
UN humanitarian officials have warned that the impact of a full-blown offensive would be beyond catastrophic for those in the city and for the entire Gaza Strip.
Last month, the Israel Defense Forces (IDF) indicated that about 60,000 reservists would be called up as part of Operation Gideon's Chariots II, which continues efforts that began in May and has seen Israel take control of at least 75% of Gaza.
On Tuesday, an Israeli military official confirmed that thousands had reported for duty, with many reservists expected to be deployed to occupied West Bank and northern Israel to support the operation.
Reports suggest that some combat units are facing lower turnout rates due to personal and financial requests for exemption by reservists who have served multiple tours during the ongoing conflict.
Prime Minister Benjamin Netanyahu announced intentions to conquer all of Gaza following the breakdown of indirect talks with Hamas aimed at hostages and ceasefire agreements.
As military actions intensify, families of hostages express fears for their loved ones' futures and demand negotiations for their safe return.
The IDF's Chief of Staff, Lt Gen Eyal Zamir, has emphasized preparations for decisive victory, underlining an escalation of military operations.
In the meantime, humanitarian conditions collapse; hospitals are overwhelmed, food shortages escalate, and malnutrition cases rise amid the bombardment.
Global food security experts have confirmed ongoing famine conditions, warning of further deterioration as the conflict extends.
