The strategy the president plans to outline Monday is at odds with his often-warm relations with the leaders of China and Russia.
President Trump had announced on Twitter in July that he was barring transgender people from serving in the military, though a ban was never fully implemented.
The new total counts service members on short-term deployments who were not included in Obama-era troop totals.
The Pentagon intends to keep indefinitely its legacy cluster munitions, more than 1.5 million of which are in South Korea.
The Pentagon has received permission to put precision-guided bombs and missiles on drones in Niger. The drones would increase the military’s ability to go after extremists in West Africa.
Jeff Sessions, the attorney general, said that the mass shooting in Texas this month showed that “relevant information may not be getting reported” to the database.