US President Barack Obama laid a wreath at the Tomb of the Unknowns at Arlington National Cemetery in Washington as part of the country's Veterans Day commemorations.
Obama told those gathered: "We are hear today to pledge that we will never forget the profound sacrifices that are made in our name.
"Our message to all those who have ever worn the uniform of this nation is this: We will stand by your side."
More top news
Mostly dry, calm and quiet
President Trump has signed proposals for regulations to "ban all devices" like bump stocks, which were used in the Las Vegas shooting.
The Prime Minister has been warned that she must make a decisive choice about what kind of trade deal she wants after Brexit.