Not many people understand PTSD. Not many people have had to write about PTSD for another person. Reading emails and taking notes from personal conversations with his brother the author manages to develop a biography for his brother that starts in the cotton fields of Arizona and goes through the battleground of Vietnam. The stories of battles that were fought take on the writer's edge making the battle scenes imaginative because, as a writer, he was never on the front line. The war jargon and the actual feelings his brother had as he walked point for the company are convincingly scripted on the pages of this book which can even be read by young adults. The author had to visually walk alongside his brother to understand how he felt as he took that first step into the Song Thu Bon River. He pictured the feelings he must have had as he took each step toward the point of no return. The author carefully imagines the elation a young Marine feels when he makes it safely to the other side of the river having carried out an order given to him by his commanders. The writer walks in his brother's shoes as he bunkers down in the middle of the crossfire. He captures the feeling of sadness as his brother's best friend is placed in a body bag. The author had to envision being a Marine and that, he did well--as a civilian and as a writer. This story is based on the life of a young Marine who, with all his mind and soul, wants to make things right in his life. The only things that stop him are the hidden enemies that still linger in his head and the enemies that openly cross his path. Together the author and his brother have one thing in common, their family and Hispanic heritage. This Hispanic heritage is interwoven in the pages of this book making it both interesting and enlightening. Hidden Enemies is a story that needs to be told, a story that needs to be read.