The cancellation, erasure or deletion of something(noun)
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Use "obliteration" in a sentence
"Use more explosives than shown in the examples on large animals like moose, especially if total obliteration is desired."
"In situations where total animal obliteration is necessary, it is advisable to double the amount of explosives used in the first two examples."
"The movie ends as the remainder of Douglas's unit -- about to return to the front and certain obliteration -- sits in a tavern and grows teary-eyed listening to a German song of nostalgia, the final message being that nations 'leaders, not peoples, are the ones who want war."