sophie
Break My Heart
Oh yes they were, at least they were post 7 years war.
edit: 2x xpost.
But they would still have the numbers, and sieging a city, which they were pros at, requires no cavalry, and that was what the bulk of the Mongol army was trained for. So it wasn't erasing their tactical and operational advantages.
I was wrong on the French, who at full mobilization could put up 300,000, according to Szabo, during the 7 Years' War. The British, however, according to Szabo at their greatest mobilization put up an army of 67, 776 men. It also must be noted, however, that in the 18th century, governments had much MUCH larger populations, and were much better at mobilizing the populace than they were in the 13th century.
As for the second part. Given the large number of fortresses in Medieval Germany (and all of Europe, for that matter), and given that the polities in the HRE have a lot of experience fighting in sieges, I don't really think it's going to be so easy for Mongols sans Cavalry to whip through the HRE.
Also, yeah. Woo x-post.