It's a moving date in 15/19H history. The Osprey history of the Light Dragoons (which I reviewed, and told the Regimental Association it was full of errors just from my few years out of 300, and to think seriously before issuing one to every future LD before it was corrected) claimed that that one day affected 15/19H thinking right through the Cold War after the regiment lost half its casualties for the entire war that day.Looks like a suitable battle for an article... I maybe stealing that in the not to distant future.
Mallinson describes it as the worst day in the history of the LD and all antecedent regiments.
The official regimental history 1939-45 devotes a handful of pages to Assche, whilst covering most of 41-3 in about the same.