사무엘하 11:15의 주석

And he will be struck and killed. In order for [Batsheva] to be divorced [from Urioh] retroactively. the result would be that [Dovid] did not cohabit with a married woman. Because all [soldiers] who went out to war wrote a conditional divorce document for their wife should they die in battle.²Rashi in Kesubos 9b gives this same explanation. Tosafos there explains that Rashi means that the condition was not necessarily that the soldier dies, but even if he does not return at the end of the war, the divorce would be valid.