Could someone give me a rundown of the militaries, including troop numbers, of the great powers of the time? I was thinking Britain, Portugal, Spain, Ottomans, China, etc. Thanks
Um. In that era there was only starting to be a "standing army". So numbers tend to fluctuate, and fluctuate greatly.
Sweden had 100,000 troops in the Thirty Years' War in 1630s, but down to 65,000 in 1680s even as they had gained significant territories in Pomerania and elsewhere.
The size of Spain's Army of Flanders fluctuated between 40,000 and 80,000 depending on the time and the tides of war, through an 80-year interval.
So you'll have to give much more specific context.