Bizuayehu Tesfaye/AP Images for Raytheon

Veterans in a pre-game flag ceremony Sunday at Gillette Stadium in Foxborough.

Chip Somodevilla/Getty Images

On Monday, a man paused between rows of headstones at Arlington National Cemetery in Arlington, Virginia.

Chip Somodevilla/Getty Images

Michele Mathews sat on the shoulders of Kevin Palmer of Goshen, Conn., to make a rubbing of where his uncle’s name is inscribed on the Vietnam Veterans Memorial.

Dina Rudick/Globe Staff

Stephan Ross (in striped uniform) met with family members of late soldier Steve Sattler (seen in framed picture), who gave Ross food and a small American Flag during the liberation of Dachau.

AP Photo/J. Scott Applewhite

President Obama spoke during a Veterans Day ceremony at the Arlington National Cemetery Amphitheater on Sunday.