After two days, most of the relevant people had already been safely evacuated. Now, with the Cloud Ninja about to break into Kirigakure, Yagura was considering how to deal with another group of rather special people. These were the families of the hundred thousand Shinobi Army led by Hozuki Zangetsu, as well as the members of the clan faction.
The best option, of course, was to evacuate these people along with them. That way, he would still hold an important bargaining chip to control those two Shinobi Armies. But these hostages numbered several hundred thousand in total, accounting for nearly half of Kirigakure's population. Taking them along would severely slow the Shinobi Army's march.
Yet Yagura could not rest easy if he simply left them behind. His direct army was now completely surrounded by Konoha, while the situation of the clan faction's Shinobi Army was unknown—but judging by Skywalker's speed of advance, they had most likely surrendered. If these hostages fell into Konoha's hands and were used as bargaining chips, those two Shinobi Armies might completely submit to Konoha. Kirigakure would suffer a tremendous loss then; the two armies made up more than half of Kirigakure's ninja!
Therefore, the only way to avoid that outcome was to have all these people die! There were several hundred thousand of them. If Yagura ordered their execution without cause, not only would the two Shinobi Armies be driven into rebellion, but the entire Land of Water would turn against him as well. Without the support of the civilians, even guerrilla tactics could no longer keep the war dragged out.
So after two days of deliberation, along with discussions with Zetsu, Yagura finally came up with a solution that offered the best of both worlds. He planned to have Mist Ninja Anbu disguise themselves