Americans celebrate Vietnam Veterans Day annually on March 29 thanks to a measure signed into law by President Donald Trump in 2017.

The holiday, officially known as National Vietnam War Veterans Day, was made official by Trump through the "Vietnam War Veterans Recognition Act of 2017," and encourages Americans to display the U.S. flag in honor of Vietnam veterans.

A similar holiday was previously observed on March 29, 2012, through a proclamation signed by then-President Barack Obama. That year marked the start of a 13-year-long celebration honoring Vietnam War veterans that runs through Veterans Day 2025.

In November 2017, Trump marked Veterans Day and the commemoration of the 50th anniversary of the Vietnam War by meeting with U.S. veterans in Vietnam.

"One of my great honors is to represent the people standing right behind me -- great, great warriors and veterans of the Vietnam War," he said during a meeting with veterans at a hotel in Danang, Vietnam. "To each of you with me today, you are the heroes who fulfilled your duty to our nation. And each of you, under the most difficult conditions, did what you had to do, and you did it well."

During that meeting, Trump also pledged to continue to support efforts by the Pentagon's POW/MIA Accounting Agency (DPAA), which works worldwide to recover the remains of U.S. troops missing in combat.

"Our accountability efforts in Vietnam are very, very important to all of us. We will not rest until all of the 1,253 missing veterans are returned home," he said. "Our veterans are a national treasure, and I thank them all for their service, sacrifice and patriotism."

Stay on Top of Your Veteran Benefits

Military benefits are always changing. Keep up with everything from pay to health care by signing up for a free Military.com membership, which will send all the latest benefits straight to your inbox while giving you access to up-to-date pay charts and more.