The U.S. military is the most technologically advanced military in the world, China has the largest army in the world but not the best technology.
Israel has arguably the best air force in the world and is always fighting.
A good percentage of Russia's tech is left over stuff from when the Soviet Union had it's downfall.
The United States of America has the most capable soldiers and by far the best technology and most military spending. So the United States by far
America
USA is the best at everything by far
The United States of America currently hold the best State of the Art Technology
The Russian Federation has the most technology and research
Germany and Japan
usa
Nigeria military is the best in the world
Ethiopia
uk
Germany
Japan i would say after the usa