I have a question: What is so 'glorious' about the event? In 1690?

I recognize that the opposing sides held - and hold - very different views and that the outcome of the battle cemented those views. However, surely, surely, it is not necessary nor desirable for one side to celebrate the other's defeat in such an in-your-face manner? More than 300 years later? Surely, surely, a more appropriate commemoration would be held in their own churches and lodges?

Kind of like if the Allies, once a year, gathered in Germany, Italy and Japan and strutted through the land.