Can US law stop Trump from withdrawing troops from Europe?

The US is set to withdraw around 5,000 troops from Germany, according to the Pentagon — a move that has raised concerns about a broader reduction of US forces across Europe.

There are around 36,000 US troops currently in Germany alongside several key military hubs, including Ramstein Air Base, command headquarters and a medical centre that treated casualties from wars in Afghanistan and Iraq.

An estimated 80,000 to 100,000 US service members are stationed across Europe, depending on rotations.

Such bases consolidate NATO’s presence in Europe, hosting US forces and supporting joint training and operations with allies.

The planned reduction of 5,000 troops amounts to around 14% of the total number of service members stationed in Germany. Those set to withdraw include a brigade combat team and a long-range fires battalion that the Biden administration planned to deploy when it was in power. They will now not be stationed in Europe.

Sean Parnell, spokesperson for the Pentagon, which houses the US Department of Defense, said that the decision follows a “thorough review of the Department’s force posture in Europe and is in recognition of theatre requirements and conditions on the ground.”

The announcement to withdraw troops — which came after German leader Friedrich Merz issued a rebuke of the Trump administration’s actions in Iran — is in line with threats US President Donald Trump has made in the past.

At the end of his first term in 2020, the president announced plans to withdraw around 9,500 US troops from Germany. The idea faced backlash from Congress before it was ultimately halted by the Biden administration, which took power in 2021.

Despite criticism from Republican and Democratic lawmakers of his recent proposal to pull troops, Trump doubled down on Saturday, telling reporters in Florida that his administration would be “cutting a lot further” than the 5,000 already mentioned.

Is Trump able to wind down large numbers of US troops in Europe?

Several analysts and commentators have pointed out that a piece of US defence legislation, which became law this year, places restrictions on the Pentagon from making significant cuts to the number of troops deployed in Europe.

Under Section 1249 of the National Defense Authorisation Act for 2026, administrations are limited in how they can use Pentagon funds to cut troop numbers.

According to the law, the Pentagon cannot use its budget to reduce troop levels in Europe to below 76,000 for more than 45 days unless it meets certain conditions.

These include certifying that the cuts are in the interests of US national security, consulting NATO allies on the move beforehand and submitting a detailed report to Congress.

There is also a waiting period, meaning large reductions in troop numbers cannot take place immediately.

Beyond legal limits, analysts note that withdrawing troops from Europe is complex and expensive.

Analysis by Liana Fix from independent US think tank the Council on Foreign Relations, notes that US forces in Germany are embedded in global command structures, meaning that relocating them is logistically complex, costly and could weaken military readiness.

On the German side, officials have so far downplayed the immediate impact of losing 5,000 troops, with Defence Minister Boris Pistorius describing the move as “foreseeable”, and pushing for Europe to take more responsibility for its own safety.

German Foreign Minister Johann Wadephul and Chancellor Friedrich Merz equally projected calm in the wake of the news, with Merz telling a television interview on Sunday: “They are constantly redeploying their troop units worldwide, and we are affected by that too.”

Critics and politicians pointed out that the threat of not stationing Tomahawk missiles on German soil poses a bigger risk than troop withdrawal, as it leaves Berlin with a missile gap that it could not replace on its own accord.