After visiting a friend who returned from World War II confined in a body cast, Kathy Collens felt compelled to enlist in the war effort. In 1944, at the age of 23, she joined the Army. Despite her background as a college-educated dietician from an affluent family, and having attended the 1936 Berlin Olympics, Kathy discovered nothing could fully prepare her for the realities of war.

Girls in a World at War offers a firsthand account of Kathy and four other young women who served in the 223rd General Hospital. Stationed in France, they operated out of a converted horse barn situated near the 82nd Airborne quarters and in close proximity to the Battle of the Bulge. Their patients included survivors released from the Dachau concentration camp.

The narrative unfolds with vivid descriptions of crossing the Atlantic, lodging in a castle, working with German prisoners of war, and attempts to make dehydrated food and Spam taste good. The book describes the experiences of weddings, a paratroopers' jump-off dance, and the surprise of a baby's birth, immersing readers in the narrative. Their adventures included interludes in Switzerland, sailing in the Mediterranean, and the jubilation of Victory in Europe (VE) Day. The story also touches on visits to Paris, Biarritz, and trips to the magnificent Reims Cathedral to see 'The Angel of the Smile' statue and attend a memorable Christmas Eve service. Romantic entanglements add another layer of complexity to the girls' wartime journey.

Throughout their trials, these women provided invaluable support to each other, navigating the tragedies of war with resilience and camaraderie. As readers engage with their stories, they'll find themselves laughing and perhaps shedding a tear, gaining a rare insight into the female perspective of war, grounded in real-life events.