Khalid is greatest general of all time, arguably.  Alexander is the second greatest general. For example, compare battle of Nihawand to Guagamela. Archaemenids recovered, Sassanids never recovered. In Yarmouk, Khalid outnumbered 10 to 1 but still victorious! He did not inherit an army, like Alexander's macedonian army from King Philip. He vanquished Persia and devastated Byzantium in 6 years! Plus he was many times outnumbered. None of these factors apply to Napoleon or Hannibal or Alexander. Acknowledge facts and logical truth. Dont become biased because Khalid was a muslim. Recognise his military genius and supremacy as the greatest general, Just as you recognise Shakespeare as arguably best writer in English langauge and Beethoven as arguably best composer. Acknowledge this truth impartially and accept my edit: "Khalid was arguably the greatest military commander in history."

PS stop referring to me as a vandaliser. I am speaking the stark truth. I respect wikipedia and want to mantain its status as the most comprehensive, voluminous, and reputable, informational resource on the internet. 

Cordially,

  Don Zaloog