Invaders from Rigel is part of the larger sample of published SF that inspired the development of Sturgeon's Law.

It is crap.

Mysterious whatever turns Australians blue, but Americans into robots. Space beings. Brain helmets. Artillery shells. Yawn-skim.

But at least I got to the immortal line:

"She swung with that underarm motion which is the nearest any woman can achieve to a throw."