Trump Names His Picks for Top Pentagon Roles

President-elect Donald J. Trump plans to nominate four men for top leadership roles at the Pentagon, including two who served in his first administration, he announced on social media on Sunday.

Mr. Trump named Stephen A. Feinberg as his choice for deputy secretary of defense, Elbridge Colby to be under secretary for policy, Michael Duffey for under secretary for acquisitions and sustainment and Emil Michael as under secretary for research and engineering. All should face Senate confirmation hearings.

Mr. Feinberg, the billionaire co-founder of the private equity firm Cerberus Capital Management, was a major funder of Mr. Trump’s presidential campaigns and was considered for a top intelligence post in the first Trump administration.

A firearms enthusiast, he invested in businesses that were in bad shape financially, including Cerberus’s 2007 acquisition of the gun maker Remington, which declared bankruptcy in 2018 and again in 2020.

Mr. Colby, whose grandfather William Colby served as C.I.A. director under Presidents Richard M. Nixon and Gerald Ford, served in the Pentagon during the first Trump administration. In October, he said in an interview with a Times opinion writer that China presented the greatest military threat to the United States, and he praised Mr. Trump for what he called a “mix of flexibility and pragmatism” for his willingness to negotiate with President Vladimir V. Putin of Russia, President Xi Jinping of China and Kim Jong-un, the leader of North Korea.

Regarding Ukraine, Mr. Colby said the country needed sufficient arms for its war with Russia, adding that he would support “an intensification of sanctions” against Moscow. He also said he did not believe that Ukraine should become a member of NATO.