In 1941, germany launched operation an invasion of the soviet union that used the largest military force in history. which accurately completes the statement?

 Operation Barbarossa

Detail:

When Hitler broke his non-aggression pact with Stalin and invaded Soviet territory in 1941, he did so in a massive way, intending to secure a quick victory.  He sent over 3 million soldiers, and 3,000 tanks were involved in the attack.  The German generals had predicted that they could win in 10 weeks' time.  As we know, that didn't happen, and the war on the Eastern front between Germany and the USSR became the bloodiest theater of war in World War II.

The German operation was termed "Barbarossa" (meaning "Red Beard" after the nickname of an old German emperor, Frederick I (1122-1190), who had won victories for the German territories in the Middle Ages.

the american revolution was by the middle and upper class, and the french was by the lower and middle class.