The U.S. Marine Corps Ceremonial Guard Company, part of the president's escort, marches in the inauguration parade for the 57th Presidential Inauguration, Jan. 21. More than 2,100 servicemembers from each of the five branches are marching in the parade, with approximately 5,000 supporting inaugural festivities. - The U.S. Marine Corps Ceremonial Guard Company, part of the president's escort, marches in the inauguration parade for the 57th Presidential Inauguration, Jan. 21. More than 2,100 servicemembers from each of the five branches are marching in the parade, with approximately 5,000 supporting inaugural festivities.