So sad.

So poignant.

So unforgettable.

A proud grandfather, Bronislaw “Grom” Karwowski (shown above left), recently walked his beautiful granddaughter, Joanna Sema (above right), down the aisle on her wedding day in Bialystok, in northern Poland.

He was decked out in his military gear, including the medals he won for bravery after his service to his country in World War II.

He clutched a cane in his right hand to help him make his way down the aisle.

A video clip of the emotional family moment shows teary-eyed guests and the bride taking deep breaths to calm herself as she walked the aisle with her grandfather, their hands tightly clasped together.

Then the groom can be seen biting his lip in nervousness and in “a bid to stop himself from crying,” as the U.K.’s Daily Express put it, as the pair slowly made their way to the front of the church.

The groom thanked the elderly man for delivering his bride to him, shook the frail man’s hand with great affection — and kissed him on both cheeks.

Just two days later, the World War II veteran passed away — and tributes to the “national hero” poured out online.

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Here’s how the Express detailed the veteran’s service and bravery.

“During WWII, Mr. Karwowski was captured by the Nazis but miraculously managed to escape from the Gestapo’s headquarters in Lomza, in northeastern Poland.”

“In 1948,” the publication continued, “he was arrested again, during the communist period, and he was sentenced to 10 years behind bars.”

“For his efforts fighting for his country, he was awarded the Knight’s Cross of the Order of the Rebirth of Poland, as well as many other honors.”

In “announcing [the hero’s] death, the National Armed Forces wrote on social media: ‘We regret to announce that today, on 1st September 2018, on the 79th anniversary of Germany’s assault on Poland, the national hero and insurgent of the Warsaw Uprising in 1944, Major Bronislaw Karwowski, retired to the eternal guard. He was 94 years old. He was awarded the Knight’s Cross of the Order of the Rebirth of Poland, the Silver Cross of Merit with Swords, the Cross of the National Armed Deed and many others.'”

The 30-year-old bride said she was in tears, the U.K.’s Daily Mail reported, “after he turned to her before walking her down the aisle and said, ‘I was looking forward to this moment and I am proud I have lived to see it.'”

Those who served in World War II are sadly departing us these days at a consistent rate.

The U.S. Department of Veterans Affairs noted in a recent update that only 558,000 of the 16 million Americans who served in that war were alive as of late 2017.

“The men and women who fought and won the great conflict are now in their late 80s and 90s. They are dying quickly,” noted the National World War II Museum, in New Orleans, on its website.

Of the wedding event in Poland described above, one person noted online, “That’s the sweetest sight I’ve ever seen … God bless them all, especially the bride and her grandfather.”

Another person said, “Normally in a wedding [the] bride and groom are the main attraction, but in this wedding, the bride’s grandfather was the main attraction, which he deserves. After all, he is war hero. God bless the bride and groom and their family. May God grant heaven to the grandfather.”

“Lots of love and respect to all from my heart,” the person added.

Watch this moving video of the grandfather and the bride: