President Donald J. Trump on Thursday honored the families of America’s service members in a message marking National Military Families Month, saying the nation “stands forever in their debt for their sacrifices.”

“For 250 years, our glorious Republic has been safeguarded by noble and heroic patriots in the United States Armed Forces,” the president wrote in the message, which the White House released. “Throughout our storied history, these warriors have been sustained by the support, love, strength, and grit provided by their incomparable families.”

The message described the demands of military life, saying families “hold firm on the home front during times of deployment, navigate frequent relocations to duty stations worldwide, strive to find jobs and maintain careers in a nomadic life, and forge new friendships in unfamiliar schools and communities.”

“As Commander in Chief, I recognize that the highest standards of military readiness cannot be maintained without prioritizing the quality of life and well-being of America’s military families,” Mr. Trump wrote.

The president pointed to the executive order he signed in August establishing what he called the first-ever Military Spouse Commission, which he said is taking on housing, employment, education, childcare and deployment-related support. According to the message, the commission’s members include spouses of the service secretaries, the Joint Chiefs of Staff and senior enlisted leaders from every branch of the armed forces, and together they represent 544 years of active-duty military service.

“The loved ones who stand beside every man and woman in uniform answer the same call to duty, bear the same weight of sacrifice, and form the backbone of the finest military the world has ever known,” he wrote.

The president said the First Lady joins him “in saluting these extraordinary Americans and in praying for God’s continued blessings upon them, our Armed Forces, and our great Nation.”