Why god accept peoples made war

Just because they use his name doesn't mean it was for him.. a lot of people misuse the name of God and are misguided

There will be a day of judgement when all the dead shall rise again and be judged by the LORD.. Those who have engaged in war / violence in rebellion against His will while at the same time these people proclaimed that it was Gods will for them to engage in violence will have a terrifying eternal destiny..