Yes. The movie 'Bridge on the River Kwai' is indeed a fictionalized account of a true event. The construction of the Burma - Thailand railway by prisoners of war was a harrowing experience. The film shows the struggle between the pride of the British prisoners, especially Colonel Nicholson, and the inhumane demands of the Japanese forces. It also highlights the final act of sabotage of the bridge which has elements rooted in the real - life situation.
The story of 'Bridge Over River Kwai' has roots in actual events, but it's not a completely accurate account. It blends truth with artistic interpretation to create a compelling narrative.