Diplomacy relies on ceremony, strict rules, and carefully managed optics — and even a tiny mistake can quickly turn into a public embarrassment.
That played out on King Charles III’s final day in Washington, DC, after the 77-year-old monarch and Queen Camilla wrapped up their visit and departed following a farewell with President Trump and First Lady Melania.
Before leaving the capital, the royal couple visited Arlington National Cemetery to honor service members who died in the two world wars while defending British and American interests in Europe.
However, during the ceremony a small but significant detail caught attention back home: as King Charles laid a wreath at the Tomb of the Unknown Soldier — a symbol of troops whose remains were never identified — many viewers noticed something off about the Union Jack on display.
Unlike the US flag — whose correct orientation is immediately obvious — the UK’s Union Jack has a more subtle “right way up,” and it’s easy for unfamiliar eyes to miss.
The key is in the diagonal elements: the broader white diagonal stripe nearest the flagpole should sit above the red diagonal stripe. When that relationship is reversed, the flag is effectively upside down.
The UK’s Flag Institute explains that the design reflects the makeup of the United Kingdom, combining symbols associated with England, Scotland, and Northern Ireland. Wales is not separately represented because it was historically treated as a principality rather than a kingdom.
As with the Stars and Stripes, the Union Jack’s layout is rooted in history and heraldry, with every colour and cross shaped by centuries of political union and conflict.
In particular, the white diagonal cross associated with Scotland is intended to “take precedence” over the red diagonal cross connected with Ireland — a legacy that today relates specifically to Northern Ireland.
For many in Britain, getting the Union Jack’s orientation right carries real historical weight — particularly because flags were once vital for naval identification when fleets had limited ways to communicate.
Traditionally, British naval vessels would only display an ensign inverted as a signal of distress. That’s why flying the Union Jack upside down is widely treated as a serious protocol error, comparable to misdisplaying the US flag.
“It is most improper to fly the flag upside down,” the Flag Institute states.
And the Arlington mix-up wasn’t the only banner-related stumble during the visit. King Charles — who also serves as head of state for countries including Canada, Australia, New Zealand, and several island nations — was in Washington amid intense coordination and ceremonial planning.
ABC reporter James Longman pointed out another issue earlier in the week involving streetlight displays around the city.
He shared: “For about two hours, they put the Australian flag up alongside the Stars and Stripes… I think they realized their mistake, and they’ve replaced them now with the Union Jack.”
Despite the visual missteps, there was no obvious sign they disrupted the broader purpose of the trip. President Trump later announced eased whisky tariffs for the UK, crediting progress made during Charles’ discussions.