Don't forget, Fritz, many of those fighting against the Scottish nationalists were French-speaking Normans who didn't yet have the whole picture of being English.
Bob, when you look at
Oakeshott it's clear that there was nothing such as a "standard" or "typical" sword. There aren't even trends. These are all nominally single-handed broadswords. Some are clearly designed to make two-handed use both comfortable and advantageous, and a couple are perhaps more than 48" of blade.
No doubt you can find Englishmen who used all kinds of blades from everywhere west of India. Obviously in Silver's day there were many who liked the continental image and hired French and Italian swordsmen to teach rapier. Silver's primary message is that the rapier is really only good against the rapier. In battle you want something that has no glaring weaknesses, and that is what the Royalists found out in the ECW.
Smallsword and foil aren't the same at all. The foil is truly blunt-edged, as that is what "foil" means. I understood the smallsword to be single-edged, but I suppose a short rapier might also be called a smallsword.
I had a chance to swing some museum pieces at a Colonial re-enactment in October. They were from the private collection of the museum curator who shared our booth. We couldn't cross blades with them but we did compare them to some replica pieces we were using for fixed play.
They were all of Prussian make spanning most of the Colonial period:
Broadsword c. 1670
Lt Cav officer's saber, 1791
Lt Cav trooper's saber, Napoleonic
Infantry officer's sword, 1884
The last is a smallsword, the grip and blade design nearly unchanged from 1720 through 1890. It has a tapered, single-edged blade about 30" long, barely an inch wide at the hilt. The back was thicker than I expected.
The broadsword blade was only about 32" long and not much more than 2" wide at the base tapering to about ¾" just short of the tip. The sword was quite well balanced and the smallsword was neither much lighter nor much quicker (at least when it came to shadow play).
Only the trooper's saber was as heavy as the basket-hilted English backsword replica we used in our demos. Modern swordmakers are more concerned with liability for breakage than realistic weight. A more confident swordsmith could trim a pound off that backsword. But I digress.
Silver's criticism of the rapier applies equally to smallsword. It has all the limitations of the rapier's attack form without the reach advantage. It will be more useful in tight compared to the 3½' rapier blade.
In sparring, smallsword technique only succeeds when the back/broadsword doesn't take the initiative in exploiting the smallsword's narrow line of attack.