WASHINGTON — President Bush's plan to restructure U.S. military forces abroad includes bringing two Army divisions home from Cold War-era bases in Germany and increasing the U.S. presence at bases in countries like Poland, Romania and Uzbekistan, Pentagon officials said Monday.

Bush said the realignment would bring up to 70,000 troops — and about 100,000 family members and civilian workers — back to the United States within a decade. More than 200,000 U.S. troops are now stationed overseas, a majority of them in Europe.

Pentagon officials said the realignment also would close scores of U.S. military installations in Europe to consolidate forces at larger bases. At the same time, the United States would make greater use of training and logistics bases on the soil of its new allies, said three top Pentagon officials who briefed reporters on condition of anonymity.

The moves are meant to give the military greater flexibility and a quicker reaction time to deal with the smaller military engagements that Pentagon planners foresee during the war on terrorism and beyond.

Democratic critics said Bush's plan would place more troops further from potential battlefields and wear out soldiers with more frequent training overseas, away from families.

Retired Gen. Wesley Clark, a former Democratic presidential candidate, said Bush's plan "will significantly undermine U.S. national security."

Democratic presidential nominee John Kerry was asked by reporters for his reaction to Bush's move as he finished a bike ride near his family's retreat in Ketchum, Idaho. He replied: "It's a great day for ride. Fabulous." He said later he had not seen the president's televised address.

In Germany, the two heavy armored divisions will be replaced with one brigade, a unit roughly one-third the size of a division's 15,000 or so troops. Instead of tanks, the replacement unit will be outfitted with new Stryker vehicles, the smaller, lighter and faster armored vehicles that are a key part of the Army's future strategy.

Defense Secretary Donald H. Rumsfeld and other administration officials have frequently discussed the realignment with allies. Rumsfeld, who proposed the changes before the 2001 terrorist attacks, reassured Kremlin officials over the weekend in Russia that the U.S. moves into former Soviet and Warsaw Pact territory are not a threat to Moscow.

The United States has had about 1,000 soldiers in Uzbekistan ever since the war in neighboring Afghanistan after the Sept. 11, 2001, attacks. It has no soldiers permanently based in Poland and Romania, although it conducts some training exercises with those countries.