The book 'The Devil's Brigade' by Robert H. Adleman and George Walton is non-fiction, so the main characters are the actual historical figures who formed and led the First Special Service Force during WWII. The narrative really focuses on the unit's commander, Lieutenant Colonel Robert T. Frederick. He's central to the entire story—the one who had to mold this contentious mix of American and Canadian volunteers into a cohesive fighting unit.
Beyond Frederick, you get a lot of focus on the men themselves, often presented as a collective character. The book highlights individuals like Major 'Andy' Anders, who played a key training role, and various soldiers whose exploits illustrate the brigade's unique, almost reckless bravery. It's less about deep personal backstories for a huge cast and more about how these distinct personalities, from lumberjacks to lawyers, came together under immense pressure.
You also get glimpses of the opposition, particularly German commanders in the Italian campaign who first dubbed them 'the black devils,' which is where the nickname originated. The real main character, in a way, becomes the Brigade itself—its ethos, its unconventional tactics, and the incredible bond that formed between these men from two nations. I found myself less remembering individual names and more remembering the unit's insane missions, like scaling the seemingly impregnable cliffs at Monte la Difensa.