legion

Numerous; vast; very great in number.

Russia’s labor and capital resources are woefully inadequate to overcome the state’s needs and vulnerabilities, which are legion.

dissatisfied customers and their legion complaints

The major unit or division of the Roman army, usually comprising 3000 to 6000 infantry soldiers and 100 to 200 cavalry troops.

A combined arms major military unit featuring cavalry, infantry, and artillery, including historical units such as the British Legion, and present-day units such as the Spanish Legion and the French Foreign Legion.

A large military or semi-military unit trained for combat; any military force; an army, regiment; an armed, organized and assembled militia.

Efforts to unionize were routinely met with clubbings, shootings, jailings, blacklistings and executions, perpetrated not only by well-armed legions of company goons, but also by police officers, deputies, National Guardsmen and even regular soldiers.

A national organization or association of former servicemen, such as the American Legion.

A large number of people; a multitude.

With all due respect to Aaron, every era seems to have had its legion of wrongdoers and shortcutters who used whatever science was available to get an edge.

To form into legions.