How war and London’s fog ignited the Impressionist revolution

In July 1870, the declaration of the Franco-Prussian War subjected France to sudden chaos.

In July 1870, the declaration of the Franco-Prussian War subjected France to sudden chaos. For a young, struggling painter named Claude Monet, the conflict was more than a political disruption. For him, it was an immediate threat to his life and career.  Monet packed what few belongings he had and fled Paris clearly refusing to be conscripted into the military. Accompanied by his new wife, Camille, and their toddler son, Jean, he crossed the English Channel to seek safety in the dense, smoggy sprawl of London. What began as a desperate flight from violence turned out to be the catalyst for a monumental shift in art history. The British capital, with its heavy atmospheric fog and unique artistic heritage, provided the perfect incubator for the birth of Impressionism.

When Monet arrived in London, he found a thriving metropolis wrapped in a semi-permanent shroud of industrial smoke and river mist. Rather than finding the gloomy weather depressing, Monet was deeply fascinated by it. He set up his easel along the River Thames, trying to capture how sunlight struggled to pierce through the heavy air. To refine his technique, Monet spent hours exploring London’s museums, particularly the National Gallery. There, he came face-to-face with the landscapes of two British masters: John Constable and J.M.W. Turner. John Constable’s vibrant, loose brushwork showed Monet how to paint nature with raw immediacy rather than rigid academic precision. J.M.W. Turner’s radical late works where solid structures like ships and bridges dissolved entirely into swirling vortexes of light and color deeply moved him. Turner had unlocked a truth Monet was already chasing: the subject of a painting wasn’t necessarily the physical object itself, but rather the fleeting quality of light reflecting off of it.

While London provided Monet with artistic inspiration, it did little to alleviate his crushing poverty. He was a refugee in a foreign city, speaking little English, with a family to feed and no market for his radical new style of painting. Durand-Ruel was a forward-thinking Parisian art dealer who had also relocated to London to protect his inventory from the war. Introduced to Monet by a mutual friend, Durand-Ruel was instantly captivated by the young artist’s work. Recognizing a unique genius, the dealer did something unprecedented. He bought Monet’s paintings outright, providing the desperate family with a financial lifeline. Even more importantly, Durand-Ruel’s gallery on New Bond Street became a sanctuary for other exiled French artists, including Camille Pissarro. By purchasing their art, exhibiting it, and introducing it to wealthy collectors, Durand-Ruel gave these rejected painters the financial stability and confidence they needed to keep experimenting.

“Without him, we would have died of hunger,” Monet later admitted. “We owe him everything.”

When the war ended and the political situation stabilized, Monet returned to France. He brought back a revolutionized understanding of color, light, and atmosphere, as well as a powerful ally in the commercial art world. Only a few years later, in 1874, Monet and his peers would bypass the traditional, strict Parisian art salons to host their own independent exhibition. It was here that Monet displayed Impression, Sunrise: a painting heavily informed by his studies of London’s misty horizons and Turner’s ethereal light. A hostile critic used the title to mock the group, labeling them Impressionists. The name stuck, and a revolution was officially born.

Ultimately, the Franco-Prussian War intended to redraw the map of Europe. Instead, by forcing Claude Monet into exile, it inadvertently redrew the boundaries of human expression forever.