and the rest went on with the subjugation of South Jupiter. During the voyage the rocket's officers were careful to show Halkett consideration but no man of them spoke a word to him except when necessary. Feeling in the army against its first traitor was intense.
When Halkett reached earth after that strange voyage from Jupiter, the heads of the Council ordered an immediate court-martial. It took place in the great Army building. Halkett's trial occupied four days and during those days the building was surrounded by crowds waiting to hear his fate.
Popular indignation at Halkett ran high, and many cries for his summary execution were being voiced. People contrasted the gallant struggles of Crane and the rest to hold South Jupiter for humanity with this treachery on the part of a trusted officer. Halkett might have been lynched if he had been less well guarded.
Inside the great building Halkett stood up and heard his conduct judged. The officers who heard the case gave him a fair trial. His counsel argued ably concerning Halkett's previous gallant record, the possibility of temporary aberrations and the like. Halkett might have escaped but for his own testimony a little later.
'I was quite in command of all my faculties when I ordered the atom-batteries not to fire,' he said quietly.
'Did you realize, Captain Halkett,' asked the presiding officer crisply, 'that in so doing you were betraying your sworn oath?'
Halkett said that he had realized. 'Then what reason can you give for your deliberate breach of trust?'
Halkett hesitated. 'I can't give any reason that you'd understand,' he said.
Then he burst out with sudden white passion—'Why shouldn't I have done it? After all, Jupiter belonged to the Jovians, didn't it? What were we there but invaders, interlopers? How could I order those hunted flipper-men destroyed when all they were trying to do was to keep their own world?'
His counsel made frantic signals to him but Halkett was beyond restraint. 'What right have we Earth races on Mars or Jupiter either? What right had we to wipe out almost all the Martians as we did, and to repeat it now on Jupiter? Because their planet has resources, the Jovians have to be killed!'
That outburst removed any chance of Halkett's acquittal. The presiding officer read gravely the sentence of ten years in military prison.
'It is only consideration of your former record on Mars and South Jupiter and the fact that you were one of Drake's historic party,' he stated, 'that keeps this court from giving you a life-sentence or even the extreme penalty.'
Halkett took the verdict without any show of emotion and was led back to his cell. Burnham, who had come in from Jupiter in time for the trial's end, went to see him before he was taken to the military prison. Halkett shook hands with him in silence — the two had nothing to say.
With Halkett in prison the world's wrath was appeased. His name was stricken off all the records of the Council's Army. Burnham went back to Jupiter. Halkett spent his days in the shops of the military prison, helping manufacture atom-blasts and bombs and other army supplies. He stood imprisonment quietly.
Crane had moved heaven and earth to get Halkett acquitted but had found his influence useless. Burnham came back and told him how Halkett had taken the verdict. For a long time these two sat silent, perhaps thinking of three thrilled youngsters in technical school who had followed Gillen's flight and rushed to join Drake.
Crane went grimly on with the business of subduing South Jupiter. In the excited activity of that campaign the world forgot Halkett quickly. Crane's plan was working with the precision of a machine, section after section of the great planet being subjugated. Over all South Jupiter those Jovians not yet attacked were moving up into the planet's northern half as yet unvisited by the earthmen's forces.
In four earth years South Jupiter was under earth control. It was gripped tightly by Crane's system of forts, most of its forests had been destroyed by atom-blasts, and as towns grew slowly around the forts great grain- planting projects were getting under way. There were some reservations of Jovians, but the greater part of the Jovians not slain during the subjugation were in North Jupiter. There the fern forests still stretched untouched from the equator to the northern pole, the same as when Gillen first had seen them. But now Crane was looking north toward them.
Jimmy Crane was now General James Crane, thirty-one years old and with gray showing at his temples from nine years of strenuous campaigning on Mars and Jupiter. He had been back to earth twice from Jupiter, once with Burnham who was now a colonel, and both times had tried to see Halkett but had been prevented by strict regulations. Halkett had for four years now worked quietly on in the prison shops making atom-blasts, bombs and rocket parts.
Crane and the Council laid plans for the subjugation of North Jupiter. It was to be done peacefully if possible — the Jovians were to be offered great fern forest reservations and other inducements. But peacefully or not, the planet had to come under control. Crane, who knew the Jovians, began assembling forces on South Jupiter, even as he sent Burnham into North Jupiter to offer the Jovians the Government's terms.
Burnham failed absolutely, as Crane and almost everyone else had expected, to win the Jovians to peaceful settlement. The flipper-men had no faith at all in the earthmen's promises, and no desire to live on reservations. Crane flashed word of that to the Council, which authorized him to proceed by force. A great preparation began on earth and on South Jupiter.
In the midst of his preparations Crane learned that Halkett had been released, his sentence halved for good behavior. He tried to locate Halkett through agents but no one knew where Halkett had gone on leaving prison. Crane was doing the work of two men in the great preparations for the North Jupiter campaign, and could not for the time institute any search for his former comrade.
Chapter 4
The Renegade
Rocket fleets arrived ceaselessly, pouring men and materials into South Jupiter from earth and Mars. The recruiting offices on earth were working night and day. Crane took the men they sent and mixed them with his veterans, drilled them, trained them in Jovian fighting, made disciplined armies of them. He concentrated men and materials at the equatorial posts.
For Crane was going to follow a different plan in North Jupiter. Instead of establishing a network of posts as on Mars and South Jupiter, he was going to encircle Jupiter with a thin band of earth forces and then push that band northward toward the pole. His circle. Crane saw, would grow smaller and stronger the farther north it pushed, and would drive the Jovians in North Jupiter onward until those not slain were hemmed in in the warm north polar region.
It took two years of preparation before Crane deemed his forces sufficient. Neither he nor Burnham had in that time heard anything; of Halkett, nor had anyone else. Burnham thought that Halkett must be dead. But both had other things enough to think of when Crane began the long-planned campaign. With his forces encircling the equator of the planet, he ordered an advance. The band around the planet began to crawl north.
Fighting with the flipper-men began in days. The Jovians by that time knew better than to charge atom- blasts or expose themselves to the barrage of atomic bombs. They tried a kind of guerrilla fighting which was not ineffective in the dense fern forests. But Crane's forces simply blasted the forests out of the way as they advanced, and the Jovians had either to flee or be slain.
Crane moved his headquarters north behind his band of forces. He directed the band's northward movement by radio, sending reinforcements in rockets to whatever part that was held back by fiercer resistance. Crane chose to advance slowly and avoid undue losses. There was no haste — the Jovians were being pushed ever.northward by the contracting circle. Within a half-year earth heard that its forces had advanced half the distance between Jupiter's equator and northern pole.
Then came to earth surprising news of a check to Crane's advance. His band had been flung back with heavy losses by the Jovians at a half-dozen places around the planet! Incredibly, it had been done by Jovians armed with atom-blasts and atomic bombs! They had prepared a circle of rude trenches and earthworks at strategic locations around the planet and had inflicted terrible damage on Crane's band of men when it advanced to that circle!
Earth was aflame instantly with apprehensive excitement. Until then it had taken Crane's final success as certain — the Council had even granted future concessions to the North Jupiter territories. How had the primitive
