A total of 24 Boeing AH-64D Apache and 94 Chinook and Black Hawk helicopters arrived in the port city of Bremerhaven, along with 350 vehicles and 1,800 personnel from the New York – based 10th Combat Aviation Brigade.
Most of the shipment will be sent to an army base in the Bavarian town of Illesheim, with the rest being sent to Poland, Lithuania and Romania.
The enhanced presence of American military might is part of Operation Atlantic Resolve, the US' commitment to NATO in response to Russia's intervention in Ukraine in 2014.
Started in 2015 under previous US President Barak Obama, the operation aims to ease the concerns of NATO allies in the Baltic region over increased Russian aggression.
Major General Duane A. Gamble, Commander of 21st Theater Sustainment Command, said the purpose of the current visit was to train with NATO allies and "strengthen our alliance together".
New US President Donald Trump has spoken highly of his Russian counterpart Vladimir Putin, with both men saying they would like stronger ties between the two nations.
Asked if this meant Trump may cancel the US commitment to the operation, Gen Gamble told Jane's Defence Weekly: "We are doing exactly what the new president has pushed for – getting a stronger US military.
"There is nothing more likely to get you stronger than if you exercise and train fighting men and women and materiel with allies abroad, in an unknown environment."
US soldiers on a training mission Hohenfels, southern Germany in 2015
He said that in the next nine months, US troops would undertake at least 80 bilateral and multinational excercises.
However, Russia has reacted with anger to the increased military presence.
Kremlin-funded news website Russia Today reported deputy foreign minister Aleksey Meshkov as saying: "This deployment is of course a threat for us.
“It is obvious that the steps by NATO gravely increase the risk of incidents [between NATO and Russian forces.”
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