Nations that became militarists were trying to show off their military technologies and thereby demonstrate influence, power and strength to other nations.
Explanation:
Militarism is the name given to a philosophy that favors the preponderance of the military element in the political and administrative life of a nation. It is the expansion of military practices into the political and social life of a nation. This concept argues that a military expression of the power of a state is fundamental in the formulation and conduct of public policies, and consequently results in the preponderance of the military class over civilians, or their strong influence on decision making.
The nations that adopted militarism became militarists. These nations had a desire to show their military power through military technologies and advancements. In this way these countries show their power, their influence and their strength.
After World War II, the federal government took control of millions of acres of New Mexico land, which it used to build military bases, missile ranges, and R&D facilities. The laboratory at Los Alamos became part of a new network of National Laboratories around the country.