The name LORD of Hosts denotes HIS universal sovereignty over every army, both Spiritual and Earthly.
The LORD of Hosts is first mentioned in 1 Samuel 1:3(ESV), We find Hannah’s husband, Elkanah, making annual trips to the temple to sacrifice to the LORD of Hosts. Just a few short verses later we find a barren and heartbroken Hannah making a covenant with the LORD of Hosts as she cried out for Him to hear her prayer and bless her with a child. She not only wanted to experience the joy of being a mother but she also wanted to be able to silence the persistent mocking of her co-sister. So she called on the LORD of Hosts to win a war she could not win on her own. God did answer her cry and blessed her with a son.
Are you wagging a war that seems impossible? Is your strength insufficient to cross on to the other side? Then remember that our God is the Great and Mighty God who is sovereign and is well able to give us victory.