Originally Posted by Nianbo
Spain never really fully mobilized for the invasion of England, I am pretty sure even the army of Flanders didn't send over their full strength. Spain had a lot more troops in the mainland and southern Italy, all in all it managed to field 300,000 soldiers during the 30 years war which happened a few decades later.
Imjin war landings happened in waves where as the Spanish attempted a crossing in one move. The Spaniards probably would have won the war if they were in a position to do this.
The Japanese landed at least 15,000 men in Korea on April 13th-14th, which is around half of the number that the Spanish planned to use to cross the Channel. Overall, the Japanese used well over 200,000 troops in the war (and that lasted a lot less than 30 years...) - so yes, although it did happen in waves, they were very large waves that were comparable to the size of the entire armies of Europe.