General Save lost all patience now.  He took a step forward.

“Give me your sword, you traitor!” he commanded angrily.  “You are under arrest.  You shall be shot in ten minutes.”

The face of the accused officer turned livid.  There was no pretending to misunderstand now.

Quickly he glanced about him.  Chester and Colonel Anderson, in their civilian clothes, stood each with a hand in his right coat pocket, and in the hand of each rested a little automatic.

An ever increasing group of Serbian officers also surrounded him.  The man with whom the traitor had been engaged in conversation moved gradually toward the rear of the circle.  General Save caught sight of him out of the corner of his eye.

“Colonel Breyold!” he commanded.

The other halted.

“Come here, sir,” commanded the general.

Glancing furtively about him, the other obeyed.  The Serbian commander turned to another of his officers.

“Relieve Colonel Breyold of his sword,” he commanded.

Without waiting to see that his command was carried out, he stepped close to Dellse.  The other gave way before him and with a sudden movement produced a revolver.

Before those nearby could interfere, he had raised the weapon and pulled the trigger.  There was a sharp report, a flash of fire, and when the smoke had cleared away, Dellse and General Save were locked in each other’s embrace, struggling furiously.

With loud cries other Serbian officers jumped forward and separated the combatants.  Dellse’s weapon was wrested from his grasp and in a moment he was powerless.

“Are you hurt, sir?” asked one of the officers anxiously of the general.

“No,” was the reply.

With a gesture of his arm, he indicated the two traitors.  “Take them out and shoot them immediately!” he ordered.

CHAPTER XXI.

Across Macedonia.

“No,” said Hal, “I am afraid to take a chance with our old airplane.  It hasn’t been gone over thoroughly yet.  If General Save is anxious for us to go at once, Chester, you and Colonel Anderson go on ahead.  I’ll look our machine over and follow you.”

“Well, whatever you say,” said Chester.  “The general is anxious that we start at once and perhaps the way you suggest will do as well as another.”

“I’m going with the first party,” declared Ivan at this juncture.  “I’m tired of sitting about doing nothing.  I want to be on the move.  If something doesn’t happen pretty soon, I’m going back to the Albanian Mountains.”

“I’ll be glad to have you go with me,” said Chester.  “Hal, you can bring Stubbs and Nikol with you.”

Hal nodded.

“All right.  Then you had better see the general about a craft of some kind.”

Chester hastened away, but was back a few moments later with the announcement that General Save would have a plane ready for them within the hour.