Operation Overlord which is known as D-Day .
The largest invasion of WWII (and in fact the largest invasion in world history) was Operation Barbarossa - the Axis invasion of the Soviet Union. The invasion force consisted of nearly four million troops (approximately three million Germans plus one million from Romania, Hungary, Italy, Finland, Slovakia and Croatia).
The largest invasion ever in world history happened when Allied troops invaded France in force.
The largest "Army" of World War 2 was the Allied Force sent on D-Day (Invasion of Normandy) and the other largest army was the Russian forces that went against the Nazis. Japan had a huge force too but a large majority of them were killed on the islands and in sunken ships.
This is the Turkish military, fourth largest military force in the World.
CHINA
The D Day invasion force on 6 June, 1944 off the coast of France
the french air force is the 4th largest in the world while China's air force and America's take the lead.
Indian Army is the 2nd largest Army in the world
The Eglin Air Force Base is the largest Air Force base in the free world. Eglin Air Force Base is the home of the Air Armament Center (AAC) and is one of four product centers in the Air Force Materiel Command (AFMC).
Invasion Force - 1990 is rated/received certificates of: USA:R
The United States has the largest air force in the world. Take note, the US Air Force is not the largest air force in the world based on number of Aircraft. The US Navy/Marine Corps has many more aircraft, and the US Army has more aircraft, mostly helicopters, than any of the other individual branches.
not really. even the largest extinction event, at the end of the Permian which had millions of times the destructive force of the entire world nuclear weapon stockpile at its peak, left about 5% of living things undisturbed.