In 1954, it was the bloody nadir for French forces in Vietnam, something this Cultural Literacy worksheet on Dienbienphu makes sure to mention. This is a half-page worksheet with a reading of two simple sentences, followed by three comprehension questions.
If you find typos in this document, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.