The package being sent includes about $700 million for tank ammunition, $500 million in tactical vehicles and $60 million in mortar rounds, sources said.
The sidelining of the Abrams reflects evolving battlefield tactics where drone use has made it virtually impossible for them to maneuver without detection.
Pentagon officials mourned seven aid workers in Gaza killed by an Israeli air strike but said they will move ahead with U.S. military aid in the region.
Gen. CQ Brown said military leaders are working closely with Israeli forces to ensure U.S. troops are kept safe during their humanitarian mission in Gaza.
The latest aid comes as the U.S. military remains deeply overdrawn and needs at least $10 billion to replenish all the weapons it has pulled for Ukraine.