The troop ships that had accompanied him on his secret mission were strung out behind their leader.
Their captains awaited the next orders of this remarkable man from another world. In the last twenty-four hours they had seen John Carter accomplish a task that no Martian would have even dreamed of attempting.
The next few hours would determine the success or failure of a plan so fantastic that the earthman himself had half-smiled at its contemplation.
Even his old friend, Kantos Kan, shook his head sadly when John Carter explained his intentions a few minutes later in the cabin of the flagship.
"I'm afraid its no use, John Carter," he said. "Even though your plan is most ingeniously conceived, it will avail naught against that horrible monstrosity.
"Helium is doomed, and although we shall all fight until the last to save her, it can do no good."
As he talked, Kantos Kan was looking down at Helium far below. Joog the giant could be seen on the plain hurling great boulders into the city.
Why Pew Mogel had not ordered the giant into the city itself by this time, Carter could not understand — unless it was because Pew Mogel actually enjoyed watching the destructive effect of the boulders as they crashed into the buildings of Helium.
Actually, Joog, however frightful in appearance, could best serve his master's purpose by biding his time, for he was doing more damage at present than he could possibly accomplish within the city itself.
But it was only a matter of time before Pew Mogel would order a general attack upon the city.
Then his entrenched forces would dash in, scaling the walls and crashing the gates. Overhead would swoop the supporting apes on their speedy mounts, bringing death and destruction from the air.
And finally Joog would come, adding the final coup to Pew Mogel's victory.
The horrible carnage that would then fall upon his people made Kantos Kan shudder.
"There is no time to lose, Kantos Kan," spoke the earthman. "I must have your assurance that you will see that my orders are followed to the letter."
Kantos Kan looked at the earthman for some time before he spoke.
"You have my word, John Carter," he said, "even though I know it will mean your death, for no man, not even you, can accomplish what you plan to do!"
"Good!" cried the earthman. "I shall leave immediately; and when you see the giant raise and lower his arm three times, that will be your signal to carry out my orders!"
Just before he left the flagship, John Carter knocked at Dejah Thoris's cabin door.
"Come," he heard her reply from within. As he threw open the door, he saw Dejah Thoris seated at a table. She had just flicked off the visiscreen upon which she had caught the vision of Kantos Kan. The girl rose, tears filling her eyes.
"Do not leave again, John Carter," she pleaded. "Kantos Kan has just told me of your rash plan — it cannot possibly succeed, and you will only be sacrificing yourself uselessly. Stay with me, my chieftain, and we shall die together!"
John Carter strode across the room and took his princess in his arms — perhaps for the last time. She pillowed her head on his broad chest and cried softly. He held her close for a brief moment before he spoke.
"Upon Mars," he said, "I have found a free and kindly people whose civilization I have learned to cherish. Their princess is the woman I love.
"She and her people to whom she belongs are in grave danger. While there is even a slight chance for me to save you and Helium from the terrible catastrophe that threatens all Mars, I must act."
Dejah Thoris straightened a little at his words and smiled bravely as she looked up at him.
"I'm sorry, my chieftain," she whispered. "For a minute, my love for you made me forget that I belong also to my people. If there is any chance of saving them, I would be horribly selfish to detain you; so go now and remember, if you die the heart of Dejah Thoris dies with you!"
A moment later John Carter was seated behind the controls of the fastest, one-man airship in the entire Helium Navy.
He waved farewell to the two forlorn figures who stood at the rail of the flagship.
Then he opened wide the throttle of the quiet, radium engine. He could feel the little craft shudder for an instant as it gained speed. The earthman pointed its nose upward and rose far above the battleground.
Then he nosed over and dove down. The wind whistled shrilly off the craft's trim lines as its increased momentum sped it, comet-like, downward — straight toward the giant!
A strip of glass, about three feet wide, completely encircled the howdah, enabling Pew Mogel to obtain complete, unrestricted vision of his fighting forces below.
Perhaps if Pew Mogel had looked up through the circular glass skylight in the dome of his steel shelter, he would have seen the earthman's speedy little craft streaking down on him from above.
John Carter was banking his life, that of the woman he loved and the survival of Helium upon the hope that Pew Mogel would not look up.
John Carter was driving his little craft with bullet speed — straight toward that circular opening on top of Pew Mogel's sanctuary.
Joog was standing still now, shoulders hunched forward, Pew Mogel had ordered him to be quiet while he completed his last-minute command to his troops.
The giant was on the plain between the mountains and the city. Not until he was five hundred feet above the little round window did Carter pull back on the throttle.
He had gained his great height to avoid discovery by Pew Mogel. His speed was for the same purpose.
Now, if he were to come out alive himself, he must slow down his hurtling craft. That impact must occur at exactly the right speed.
If he made the crash too fast, he might succeed only in killing himself, with no assurance that Pew Mogel had died with him.
On the other hand, if the speed of his ship were too slow it would never crash through the tough glass that covered the opening. In that case, his crippled plane would bounce harmlessly off the howdah and carry Carter to his death on the battlefield below.
One hundred feet over the window!
He shut off the motor, a quick glance at the speedometer — too fast for the impact!
His hands flew over the instrument panel. He jerked back on three levers. Three little parachutes whipped out behind the craft. There was a tug on the plane as its speed slowed down.
Then the ship's nose crashed against the little window!
There was a crunch of steel, a splinter of wood, as the ship's nose collapsed; then a clatter of glass that ended in a dull, trembling thud as the craft bore through the window and lodged part way into the floor of Pew Mogel's compartment.
The tail of the craft was protruding out of the top of the howdah, but the craft's door was inside the compartment.
John Carter sprang from his ship, his blade gleaming in his hand.
Pew Mogel was still spinning around crazily in his revolving chair from the tremendous impact. His earphones and attached microphone, with which he had directed Joog's actions as well as his troop formations, had been knocked off his head and lay on the floor at his feet.
When his foolish spin finally stopped, Pew Mogel remained seated. He stared incredulously at the earthman.
His small, lidless eyes bulged. He opened his crooked mouth several times to speak. Now his twisted fingers worked spasmodically.
"Draw your sword, Pew Mogel!" spoke the earthman so low that Pew Mogel could hardly bear the words.
The synthetic man made no move to obey.
"You're dead!" he finally croaked. It was like the man were trying to convince himself that what he saw confronting him with naked sword was only an ill-begotten hallucination. So hard, in fact, did Pew Mogel continue to stare that his left eye behaved as Carter had seen it do once before in Korvas when the creature was excited.
It popped out of its socket and hung down on his cheek.
"Quickly, Pew Mogel, draw your weapon — I have no time to waste!"
Carter could feel the giant below him growing restless, shifting uneasily on his enormous feet. Apparently he did not yet suspect the change of masters in the howdah strapped to his helmet; yet he had jumped perceptibly when Carter's craft had torn into his master's sanctuary.
Carter reached down and picked up the microphone on the floor.
"Raise your arm," he shouted into the mouthpiece.
There was a pause; then the giant raised his right arm high over his head.
"Lower arm," Carter commanded again. The giant obeyed.
Twice more, Carter gave the same command and the giant obeyed each time. The earthman half smiled. He knew Kantos Kan had seen the signal and would follow the orders he had given him earlier.
Now Pew Mogel's hand suddenly shot down to his side. It started back up with a radium gun.
There was a blinding flash as he pulled the trigger; then the gun flew miraculously from his hand.
Carter had leaped to one side. His sword had crashed against the weapon knocking it from Pew Mogel's grasp.
Now the man was forced to draw his sword.
There, on top of the giant's head, fighting furiously with a synthetic man of Mars, John Carter found himself in one of the weirdest predicaments of his adventurous life.
Pew Mogel was no mean swordsman. In fact, so furious was his first attack that he had the earthman backing around the room hard-pressed to parry the swift torrent of blows that were aimed indescriminately at every inch of his body from head to toe.
It was a ghastly sensation, fighting with a man whose eye hung down the side of his face. Pew Mogel had forgotten that it had popped out. The synthetic man could see equally well with either eye.
Now Pew Mogel had worked the earthman over to the window. just for an instant he glanced out.
An exclamation of surprise escaped his lips.
"Look, Pew Mogel!" he cried. "Your flying army is disbanding!"
The thousands of malagors that had littered the sky with their hairy riders were croaking hoarsely as they scattered in all directions. The apes astride their backs were unable to control their wild fright. The birds were pitching off their riders in wholesale lots, as their great wings flapped furiously to escape that which had suddenly appeared in the sky among them.
The cause of their wild flight was immediately apparent.
The air was filled with parachutes! —and dangling from each falling parachute was a three-legged Martian rat — every Martian bird's hereditary foe!
In the quick glance that he took, Carter could see the creatures tumbling out of the troop ships into which he had loaded them during his absence of the last twenty-four hours.
His orders were being followed implicitly.
The rats would soon be landing among Pew Mogel's entrenched troops.
Now, however, John Carter's attention returned to his own immediate peril.
Pew Mogel swung viciously at the earthman. The blade nicked his shoulder, the blood flowed down his bronzed arm.
Carter stole another glance down. Those rats would need support when they landed in the trenches.
Good! Tars Tarkas's green warriors were again racing out of the hills, unhindered now by scathing fire from an enemy above.
True, the rats when they landed would attack anything in their path; but the green Tharks were mounted on fleet thoats — the apes had no mounts. No malagor would stay within sight of its most hated enemy.
Pew Mogel was backing up now once more near the window. Out of the corner of his eye, Carter caught sight of Kantos Kan's air fleet zooming down toward Pew Mogel's ape legions far below.
Pew Mogel suddenly reached down with his free hand.
His fingers clutched the microphone that Carter had dropped when Pew Mogel had first rushed at him.
Now the creature held it to his lips and before the earthman could prevent he shouted into it.
"Joog!" he cried. "Kill! Kill! Kill!"
The next second, John Carter's blade had severed Pew Mogel's head from his shoulders.
The earthman dived for the microphone as it fell from the creature's hands; but he was met by Pew Mogel's headless body as it lunged blindly around the room still wielding its gleaming weapon.
Pew Mogel's head rolled about the floor, shrieking wildly as Joog charged forward to obey his master's last command to kill!
Joog's head jerked back and forth with each enormous stride. John Carter was hurled roughly about the narrow compartment with each step.
Pew Mogel's headless body floundered across the floor, still striking out madly with the sword in its hand.
"You can't kill me. You can't kill me," shrieked Pew Mogel's head, as it bounced about. "I am Ras Thavas' synthetic man. I never die. I never die!"
The narrow entrance door to the howdah had flopped open as some flying object hit against its bolt.
Pew Mogel's body walked vacantly through the opening and went hurtling down to the ground far below.
Pew Mogel's head saw and shrieked in dismay; then Carter managed to grab it by the ear and hurl the head out after the body.
He could hear the thing shrieking, all the way down; then its cries ceased suddenly.
Joog was now fighting furiously with the weapon he had just uprooted.
"I kill! I kill!" he bellowed as he smacked the huge club against the Helium planes as they drove down over the trenches.
Although the howdah was rocking violently, Carter clung to the window. He could see the rats landing now by the scores, hurling themselves viciously at the apes in the trenches.
And Tars Tarkas' green warriors were there now, also. They were fighting gloriously beside their great, four-armed leader.
But Joog's mighty club was mowing down a hundred fighters at a time as he swept it close above the ground.
Joog had to be stopped somehow!
John Carter dove for the microphone that was sliding around the floor. He missed it, dove again. This time his fingers held it.
"Joog — stop! Stop!" Carter shouted into the microphone. Panting and growling, the great creature ceased his ruthless slaughter. He stood hunched over, the sullen, glaring hatred slowly dying away in his eyes, as the battle continued to rage at his feet.
The apes were now completely disbanded. They broke over the trenches and ran toward the mountains, pursued by the vicious, snarling rats and the green warriors of Tars Tarkas.
John Carter could see Kantos Kan's flagship hovering near Joog's head.
Fearing that Joog might aim an irritated blow at the craft with its precious cargo, the earthman signalled the ship to remain aloof.
Then his command once again rang into the microphone.
Joog lie down. Lie down!"
Like some tired beast of prey, Joog settled down on the ground amid the bodies of those he had killed.
John Carter leaped out of the howdah onto the ground. He still retained hold of the microphone that was tuned to the shortwave receiving set in Joog's ear.
Joog shouted Carter again. "Go to Korvas. Go to Korvas."
The monster glared at the earthman, not ten feet from his face, and snarled.