The Israel Defense Force (IDF) said the first plane carrying US armaments arrived at the Nevatim Airbase in southern Israel late on Tuesday evening.
"The cooperation between our militaries is a key part of ensuring regional security and stability in times of war," the IDF said on X, formerly known as Twitter.
Israel's defence ministry published a video of the shipment arriving. It said on X that the equipment was "procured & brought to Israel by the Israel Ministry of Defense's DOPP [Department of Production and Procurement], the US Procurement Mission & the International Transportation Unit".
US pledges support: US President Joe Biden called Israeli Prime Minister Benjamin Netanyahu on Saturday, in the immediate wake of Hamas' attack, to emphasise his country's continued support for Israel.
In remarks made at the White House on Tuesday, Biden condemned the "pure, unadulterated evil" of the Hamas attackers, and confirmed that at least 14 American citizens were among those killed in Israel.