Can we outlaw war without curtailing evolution?

Raymond Cattell thought we may have reached the level of civilization where we can outlaw war without curtailing evolution.

True there have been many inventions brought about by war, rocketry etc.. which eventually landed us on the moon. Cattell thought that we might think of war as the lower level of testing the power of a group and that groups might assert their power at a higher level of competition, with technology etc.

Sociobiological research institutes could be set up to examine the problems of nations and states, regarding the various stages that societies go through, like the age-categories of individuals, to help us not only outlaw dysgenic wars but insure the future evolution of culture and genes.

Cattell's important hope was that we can outlaw war without curtailing evolution. Can we really civilize the beast to this degree? Perhaps if we are to survive and evolve out into the cosmos we must.