Meanwhile, the planned relocation of 2,500 U.S. air force personnel from Britain to Germany has been cancelled.
General John Hyten, vice-chairman of the joint chiefs of staff, said the troop reallocation would bolster USA commitment to its allies because it would "better distribute forces across Europe and increase the use of rotational forces".
"As we have entered a new age of Great Power Competition, we're now at a different one of these inflection points in NATO's development, and I am convinced that the alliance will be the better and more powerful for this", he further added.
US Defence Secretary Mark Esper said the move supported US strategic goals and would "strengthen North Atlantic Treaty Organisation and improve operational efficiency". He was briefed on the issue last week, and he issued a statement saying the "concept for realigning US military posture in Europe" is sound.More news: Ireland reports highest daily number of COVID-19 infections since May
On the House side, Rep. Mac Thornberry, R-Texas, ranking member of the House Armed Services Committee, issued a cautious statement, saying, "Some of the proposed moves clearly have merit".
"By unsettling the North Atlantic Treaty Organisation alliance once again, Trump's actions are likely to reduce Europe's confidence in US support for its security", Courtney said. "We are following the boundary east, where our newest allies are", the Defense Secretary said.
Defense Secretary Mark Esper has not portrayed the pullout in those terms and said the military's plan would prevent the troop movements from undermining North Atlantic Treaty Organisation and its efforts to deter Russian intervention, following Moscow's 2014 annexation of the Crimean Peninsula.
Trump publicly called for cutting the number of troops in Germany during a White House news conference with the Polish prime minister last month.
Stars and Stripes reported that the 2nd Cavalry Regiment with 4,500 troops will be returning to the U.S. No decision has yet been made on AFRICOM, Special Operations Command Africa, and a battalion of the 10th Special Forces Group that are all stationed in Stuttgart.More news: Bryan Cranston Reveals He Recovered from Coronavirus: ‘Keep Wearing the Damn Mask’
Of the troops, 6,400 will return to the United States, while another 5,400 will be deployed elsewhere in Europe.
Trump has legitimate problems with Germany's North Atlantic Treaty Organisation defense commitments and its support for a Russian gas pipeline, the board noted.
But US President Donald Trump gave his own reason, telling reporters on Wednesday, "We're reducing the force because Germans are not paying their bills. It's very simple", Trump said. "It enhances deterrence and improves operational flexibility", he said. As he already pointed out when advancing the partial withdrawal of troops last June, the decision is linked to his usual criticism of Berlin for not dedicating 2 percent of its gross domestic product (GDP) to defense.
Defense expenditure figures from 2019 show that only eight of the 30 North Atlantic Treaty Organisation members have met the two percent threshold - a figure agreed to by North Atlantic Treaty Organisation nations in 2006.
"The repositioning of our forces in Europe constitutes a major strategic and positive shift", Esper said.More news: Work begins in France to recreate process that powers Sun
"Obviously there is an effort to get North Atlantic Treaty Organisation to pay their bills, but there's also a yearning among the American public to draw down our presence around the world". It can and should meet its 2 percent standard. "And it can go beyond that".