Complex sentence: More American troops began to arrive as the war progressed, experiments near by including The Great Panjandrum were said to be view in the area in secret by Dwight D. Eisenhower and Sir Winston Churchill.
Split into simpler sentences: More American troops began to arrive as the war progressed. Experiments nearby, including The Great Panjandrum, were said to be viewed in the area in secret by Dwight D. Eisenhower and Sir Winston Churchill.