Sigma Force Novels

The Fifth Crusade: Strategy, Egypt, and Another Failure

The Fifth Crusade: Strategy, Egypt, and Another Failure

The Children’s Crusade: Legend, Reality, and Tragedy of 1212

The Children’s Crusade: Legend, Reality, and Tragedy of 1212

Crusades Against Christians: Political Crusades Inside Europe

Crusades Against Christians: Political Crusades Inside Europe

The Sack of Constantinople (1204): A Turning Point in Christian History

The Sack of Constantinople (1204): A Turning Point in Christian History

How the Boxer Protocol Weakened the Qing Dynasty: The Treaty That Accelerated Imperial Collapse

How the Boxer Protocol Weakened the Qing Dynasty: The Treaty That Accelerated Imperial Collapse

Foreign Military Presence in China After 1901: Occupation, Control, and the Shadow of the Boxer Protocol

Foreign Military Presence in China After 1901: Occupation, Control, and the Shadow of the Boxer Protocol

Punishments, Executions, and Exile Under the Boxer Protocol: How Qing China Was Forced to Submit

Punishments, Executions, and Exile Under the Boxer Protocol: How Qing China Was Forced to Submit

The Boxer Indemnity: How China Was Forced to Pay for the Rebellion and Its Lasting Consequences

The Boxer Indemnity: How China Was Forced to Pay for the Rebellion and Its Lasting Consequences