Deuteronomy 20:5-9

The officers also shall speak to the people, saying, ‘Who is the man that has built a new house but has not dedicated it? Let him go and return to his house, otherwise he might die in the battle and another man would dedicate it.

And who is the man that has planted a vineyard but has not put it to use? Let him go and return to his house, otherwise he might die in the battle and another man would put it to use.

And who is the man that is betrothed to a woman and has not married her? Let him go and return to his house, otherwise he might die in the battle and another man would marry her.’

Then the officers shall speak further to the people and say, ‘Who is the man that is afraid and fainthearted? Let him go and return to his house, so that he does not make his brothers’ hearts melt like his heart!’

And when the officers have finished speaking to the people, they shall appoint commanders of armies at the head of the people.