| CHAPTER | |
| I. | [Big Preparations] |
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| II. | [Ready to Go] |
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| III. | [The Silent Call to Battle] |
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| IV. | [The Thunder of Mars] |
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| V. | [Thiaucourt at Any Cost] |
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| VI. | [Blasting the Enemy Out] |
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| VII. | [The Battle in the Wood] |
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| VIII. | [Advancement for Tom] |
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| IX. | [At Rest] |
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| X. | [A Spy in the Night] |
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| XI. | [In the Nick of Time] |
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| XII. | [The Desperate Chance] |
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| XIII. | [Captured] |
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| XIV. | [John Big Bear—Scout] |
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| XV. | [The Struggle Under the Water] |
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| XVI. | [The Death Dungeon] |
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| XVII. | [John Big Bear Avenges] |
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| XVIII. | [The Death of Snooper Jones] |
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| XIX. | [The Scope of it All] |
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| XX. | [Well-earned Rewards ] |