Sentence:  No one was to be spared in this frightful slaughter. The American 34th, 36th Texas, lst Armored, the British, the New Zealanders, the Indians, the Poles and the French, under the brilliant General Juin; all were to be ground to <WSD>mincemeat</WSD> by futile attacks against this fortress. 
Meaning of the word marked with <WSD> tags:  Something or someone utterly destroyed.