Commanding Angels book by Larry Keefauver 

When a military commander issues ongoing orders for certain procedures, these orders are called the standing orders, God has already issued standing orders to His armies of angels. Commanding angels involves you invoking the commands of God already in place on your behalf. The commands have been posted in the face of all your enemies. But if you don’t invoke the commands, angels cannot help you. You have the standing orders of God in hand to protect, propel and prevent harm, the angels await your signal. What are you waiting for?