The proof of that is the verse's declaration that the punishment for these combatants is that they be killed, or crucified, or that their hands and feet be cut off; that is, their punishment must be of the exact nature of their deed. Let the reader ponder this.

[The Third Verse: “Then is it the judgement of [the time of] ignorance they desire? But who is better than Allah in judgement for a people who are certain [in faith].”] ¹