Behold I will send an angel before you. One is forbidden to move territorial markings, whether those of the tribes, as allocated by Joshua and Eleazar, or those of one's field and encroach on that of a neighbour. Isaiah condemns the wealthy landowners who squeeze out the poor person whose land lies between theirs. Such a person is called a cheat or wicked one and comes under the heading 'moving borders'. Halachah regulates carefully the opening of the same business or shop near or next to, or in the same town, of a shop or business of the same type.
Treasures unjustly acquired are of no avail.
A priest, specifically anointed for the battle, had to address the mustered people to give them courage to face the enemy. Finally, the officers only advised those who were afraid to go home in case they infected the others with their fear. Here only the officers spoke, because the priest in the first instance gave encouragement against faintheartedness in war and would have contradicted himself by suggesting that the 'cowards' return home. The Mishnah and Gemara followed by the codifiers e.g. Rambam, and commentators explain further this concept of 'fear' as mentioned in the Sidrah. In the first instance, they differentiate between milchemet chovah, an obligatory war against the seven nations of Canaan, who were to be destroyed, and a milchemet reshut, a voluntary war, that is any other type of war.