The best definition of the word "Blitzkrieg" is this: A rapid invasion by air and by land.
Blitzkrieg is a military doctrine that refers to the surprise attack using a rapid, overwhelming force concentration that is made up of mechanized infantry formation and armored cars in warfare.
Therefore, the best word that suits the definition of the word Blitzkrieg is a rapid invasion into an area either by air or by land. The Russians used the doctrine during world war 1.
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