"The US is approving its rotational force plan for the Baltic countries and Lithuania, and the US battalion with reinforcements will be stationed in the country through 2025," he told BNS by phone from Brussels.
Anusauskas was speaking after Friday's meeting between NATO's nine eastern flank nations and US Secretary of Defense Lloyd Austin.
"Since the US is sending a full combat battalion and reinforcement units, the number may vary, but it is between 600 and 800 troops," the Lithuanian minister said.
US battalions have been rotating in Lithuania since 2019. American rotational companies were deployed to the country between 2014 and 2017.
In response to the Russian invasion of Ukraine, the US reinforced its rotational battalions by sending in more troops and equipment.
In June, some 800 soldiers from the United States Army's 1st Battalion, 66th Armor Regiment with combat equipment began their rotation of at least nine months in Lithuania.
Also, a German-led 1,500-strong multinational battalion has been stationed in Lithuania since 2017.
The forward command element of a German brigade assigned to Lithuania has been based in the Baltic country. Lithuanian officials expect the brigade, which consists of several thousand troops, to be permanently deployed in the country in the future.