Question

How many troops from Paraguay entered the war?

Answer 1

In total, around 150k troops from Paraguay entered the Paraguayan War. Almost half were official and almost half were militia/guerilla.

Answer 2

The armies of Brazil, Argentina, and Uruguay were a fraction of the total size of the Paraguayan army. Argentina had approximately 8,500 regular troops and a squadron of four vapores and one goleta. Uruguay entered the war with fewer than 2,000 men and no navy.