Joshua 10:7 - Matthew Poole's English Annotations on the Holy Bible

Having, no doubt, asked advice of God first, which is implied by the answer God gives to him, Joshua 10:8. And all the mighty men, or, even, or that is, as this particle is oft used, as hath been noted before. So it seems put here by way of explication and restriction; having said all the people of war, he now adds, even all the mighty men, &c., i.e. an army of the most valiant men picked out from the rest; for it is not probable, either that he would take so many hundred thousands with him, which would have hindered one another, or that he would leave the camp without an army to defend it.