Judges 1:6

6. Cut off his thumbs and… great toes This barbarous mutilation, unusual with the Jews, was designed to incapacitate for military service. The victim of this cruelty could neither march nor fight. In this instance the Israelites exercised this cruelty according to that barbaric style of justice called the lex talionis. In modern warfare it is usual to release prisoners “ on parole,” that is, on their word of honour not to fight again; but among some barbarians such mutilation or disabling was the only security against their fighting again. And modern civilized states, when called to war with certain barbarous or half-civilized tribes, have sometimes been obliged to resort to some terrible form of the law of retaliation. See note on Joshua 10:26.