The plans for the National Museum of the U.S. Army are marching right along. Lockheed Martin Corp., the global company based in Bethesda, pledged $10 million this week for the museum’s education center.

With that promise, the museum has raised $55 million out of an estimated $155 million capital campaign for the facility at Fort Belvoir. The museum is scheduled to open in 2015 on the June 14 anniversary of the army’s founding.

The main building of the museum will cover 175,000 square feet and the Education Pavilion will be on the main floor of the complex. The education area will emphasize science, technology, engineering and mathematics in keeping with general education priorities and the programs the Army and Lockheed have to train future leaders.

The architect is Skidmore, Owings & Merrill. The exhibit design of Christopher Chadbourne & Associates, who did the National Museum of the Marine Corps, is 95 percent complete, according to the museum planners.