Each year, the website Global Firepower ranks countries in what they call the "global firepower index," a ranking of the world's 126 most powerful militaries. The index uses a 50-point algorithm to determine a nation's military power. Their system focuses on the diversity of weapons systems and provides bonuses and penalties for things like nuclear arms, diversity of force structures, and alliances (like NATO). The formula is interesting because it makes a smaller but more technologically advanced country competitive with larger militaries from less advanced countries.
Here are the top ten:
Italy has a large drop off in available manpower and military aged persons. Italy outnumbers the Germans in almost every area, from aircraft and land forces to seapower. And while Italy has almost twice the resource availability, it has half the labor force to work those resources.
Germany's economy is significantly superior to Turkey's, even though Turkey has half the annual defense budget. Still, Germany can't keep up in available manpower.
Turkey's large manpower reserve and land forces put it next to Japan. Its large external debt and lack of diversity in naval power keep the gap between numbers 7 and 8 quite big, however. It's important to note Turkey is also a member of NATO and its military is probably designed around the wars it is most likely to have to fight.
6. United Kingdom
The UK and the French look remarkably similar at first, but the real disparity is in fixed wing aircraft, fleet strength, and economics. The French have less foreign debt and operate a larger military despite a much smaller defense budget.
Despite the looming specter of WWII failure, the French are very good at projecting regional power, especially in their former colonial sphere of influence.
Unfortunately for India's chief rival Pakistan, India is the fourth most powerful force on the planet, while the Pakistanis sit at #13.
Aside from leading in manpower, the Chinese also have trillions in foreign currency reserves and purchasing power.
Russia is first in terms of geographical land mass, which is important for defensive wars, especially when it comes to external invaders.
1. United States
Is anyone really surprised by this? The U.S. may not top manpower, but they do beat all in terms of land systems. airpower, and naval force, along with a host of other factors, like logistics.