A military demotion is when your rank or position is lowered by a superior. It is usually a punishment for a crime or wrong doing. There are a few other technical reasons that are not relevant to our discussion. David once was put in charge of the men of war. This was a special squad of soldiers in the Kings command. Abner was the general of the Army. Later David was put in charge of a troop of about a thousand soldiers. There’s only one sentence to betray this demotion: ”Saul removed him from him”. There it is. David did not have the delight of Saul anymore. He was treated at a distance before Saul began hunting him. The attempt later to give him one of the daughters to marry was a set up to kill him. There was a different spirit in Saul. No leader should kill other rising leaders. Of course we know that history bears us out that some leaders behave like Saul. I’m wondering: Are you killing your leaders or are you rasing them?
And Saul was afraid of David, because the LORD was with him, and was departed from Saul. Therefore Saul removed him from him, and made him his captain over a thousand; and he went out and came in before the people. 1 Samuel 18:12-13 KJV