In many ways that is how the US operates now. We spend money so that factories that make military equipment are available, staff is available and trained to use

In many ways that is how the US operates now. We spend money so that factories that make military equipment are available, staff is available and trained to use the equipment all in case of, and as a deterrent to a more serious conflict. The canonical example is that the US purchases hundreds of tanks a year even though there is no real current military need. There are at least a thousand on hand mostly sitting in storage while relatively few are used for training.