What are two opposing military alliances in World War 2?

The Nazi and Japanese and Italian Axis Forces faced off the Allied Forces. The Allied Forces had the Big Three nations of the United States, Russia and the United Kingdom. There were many other nations involved.

Allied Forces

Ethiopia · China · Czechoslovakia · Poland · United Kingdom · India · France ·Australia · New Zealand · South Africa ·Canada · Norway · Belgium · Netherlands · Greece · Yugoslavia · Soviet Union ·United States · Philippines · Mexico ·Brazil

Axis Forces

Bulgaria · Reorganized National Government of China · Croatia · Finland · Germany · Hungary · Iraq · Italy · Italian Social Republic · Japan · Manchukuo · Romania ·Slovakia · Thailand · Vichy France

Underground Resistance

Austria · Baltic States · Belgium · Czech lands · Denmark · Estonia · Ethiopia ·France · Germany · Greece · Hong Kong ·India · Italy · Jewish · Korea · Latvia · Luxembourg · Netherlands · Norway ·Philippines · Poland (Anticommunist) · Romania · Thailand · Soviet Union · Slovakia ·Western Ukraine · Vietnam · Yugoslavia