And Moses sent them to the war, a thousand of every tribe, them and Phinehas the son of Eleazar the priest, to the war, with the holy instruments, and the trumpets to blow in his hand.
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George Leo Haydock
AD 1849
Trumpets. These are the holy vessels just specified, though some believe that he carried the ark, which was done in some wars, Josue vi. 1., and 1 Kings iv. 5. Priests always sounded the trumpet, Deuteronomy xx. 2. Phinees was appointed general of this expedition to reward him for his zeal against the fornicators. (Calmet)
Or Josue headed the army, as he did on other occasions, though his name be not here specified. The tribe of Levi was not obliged to go to battle, and therefore only twelve tribes send each 1000. Josue had been elected general by God, so that it was not necessary to mention his name. (Salien)