Yugoslavia Slovakia Hungary Romania
In addition to the three major Axis powers, six other countries signed the Tri-Partite Pact as its member states. Of the additional countries, Romania, Hungary, Bulgaria, the Independent State of Croatia, and Slovakia participated in various Axis military operations with their national armed forces, while the sixth, Yugoslavia, saw its pro-Nazi government overthrown earlier in a coup merely days after it signed the Pact, and the membership was reversed.
