What is associated with: august 1914 is a novel about the first days of wwi by this author of the gulag archipelago?

What is associated with: august 13 1969 for these 3 men following a quarantine? What is associated with: august 16 1977 in memphis tennessee? What is associated with: august 17 1935 will rogers this aviator die in airplane crash in alaska nation shocked by trag… What is associated with: august 19 1946 in hope arkansas? What is associated with: august 1983 saw the first night launch of this reusable us orbital vehicle? What is associated with: august 2 1923 in san francisco california? What is associated with: august 21 1968 this nation invaded by russians and four other warsaw pact forces? Based on the clue 'august 21 half a million people march through the ...', what is the answer?