Sub-Roman Britain (Cavalry etc)

[jkaler48]

As to the first point, I must vehemently deny that. First of all, Roman cavalry did not dismount to fight. I don’t know where you found that but it’s absolutely untrue. It was to the contrary a Germanic thing, ride to battle but fight on foot.

If the Romans regarded Caesar's advice highly they did not often dismount Cavalry to fight on foot:
"caes.spain.15": [15] It invariably happens in encounters of cavalry that when the troopers dismount to charge the infantry, the match proves unequal, as happened on the present occasion. For a select body of the enemy's light-armed foot, coming unexpectedly upon our horse, they alighted to sustain the charge. Thus in a very little time, from a cavalry it became an infantry engagement, and again from an infantry changed to a cavalry engagement, in which our men were driven back to their very lines; but being there reinforced, about a hundred and twenty-three of the enemy were slain, several forced to throw down their arms, many wounded, and the rest pursued quite to their camp. On our side, three were slain, besides twelve foot-soldiers and five troopers wounded.

Mounted troops did dismount to fight like Veteran's and some bodyguard troops but they were mounted Infantry not Cavalry.