2017 Military Strength Ranking
KNA : The complete Global Firepower list for 2017 puts the military powers of the world into full perspective
The finalized Global Firepower ranking relies on over 50 factors to determine a given nation's power index score.
Based on this ranking The USA army is the top . After USA , Russia , China and India have the strongest military in the world .
The rank of the force military of Iran is 21th.
Source : Global Fire Power