active forces

By this writer the world is explained as a product of three principles—dead matter, and two active forces, heat and cold.

Aside from the active forces which apparently flow from it, we know nothing, and speculation takes the place of knowledge.

The development of composite units in the reserve paralleled a far more significant development in the active forces.

All reservists are assigned to units structured to complement and provide needed depth to our active forces.

And we declared that we would wage war, not only on all anti-suffrage forces, but on all neutral and non-active forces.