World War III (A War like no other: Scenario 1)

World War III is the biggest and deadliest conflict in history, with deaths ranging up to 120 to 150 million, including civilian casualties, and with mobilization up to 1.3 billion in 104 countries and affected people ranging up to 5.7 billion, it is also the most widespread conflict in recorded history. The war also re-introduced the usage of trench warfare in multiple parts of the world - including Central and Western Europe, South Asia, East Asia, and northern part of Brazil.