Tripoli

A bold U.S. Marine lieutenant who leads the improvised expedition, forging an uneasy alliance between American troops and local mercenaries. He navigates desert hardship, coordinate cross-cultural cooperation, and make rapid tactical calls under pressure. O'Bannon's pragmatism and courage drive the mission from recruitment to the decisive strike on Derna.

A young officer who volunteers to build and sustain the land force, complementing O'Bannon's leadership with reconnaissance and discipline. He helps manage the morale of volunteers and the integration of diverse fighters. Trippe embodies disciplined perseverance in a high-stakes campaign.

Exiled former Pasha of Derna who provides his followers in exchange for the restoration of his throne. He represents a political stake in the conflict and a practical ally who negotiates terms with the Americans. His alliance is pivotal to mustering enough strength to challenge his brother.

An aristocrat who travels with the expedition, wielding influence behind the scenes and stirring romantic tension with O'Bannon. She strategizes to advance her own political goals and navigates loyalties between the Pasha and the Americans. Her presence introduces intrigue and moral ambiguity to the mission.

The American Consul who spearheads the covert mission, coordinating diplomacy and military planning. Eaton's vision and persistence shape the alliance with Hamet and the recruitment of diverse forces. He embodies the balance between policy goals and battlefield realities.

A local ally who aids in recruiting and guiding the multinational mercenary force, bridging cultural gaps between Americans and North African fighters. His knowledge of terrain and people helps sustain the campaign through difficult marches. Khalil's presence emphasizes the value of local partnership in foreign operations.

The naval commander overseeing the Mediterranean squadron, whose ships must arrive in time to support the Derna operation. He represents the strategic maritime power that complements land actions and helps avert mutiny aboard the ships. Barron's leadership anchors the sea portion of the campaign.