Which country have the Best land force army in the world?

Answer 1

As a retired US Army officer i have been in numerous discussions with fellow officers and senior non-commissioned officers. From a pure fire power standpoint, no force in the world can prevent the US Army's combined force organization from completing a military mission. The current combination of air support, indirect artillery support, direct armor support and internal weapons support of the modern infantry unit coupled with the amount of training the unit conducts makes the modern infantry unit the best land force in the history of warfare.

That being said from a historical perspective you could argue that the best combat fighting force in modern times was either the Israel defense forces, who have fought against overwhelming odds rather successfully for decades or the WWII German army who basically conquered Europe and fought off the combined might of the US, British and Russian armies for over 3 years despite the naval blockade severely restricting supplies. I don't think it's fair to discuss the ancient armies as most of their success can be attributed to changing weapons, tactics or selected leadership rather than using the same basic weapons with the basic tactics.

Otherwise if you change the parameters of the discussion to just the infantry unit itself without support the answer might be different.