The job of a film director is extremely challenging which requires the person to have knowledge of almost all the fields of film production. The success or failure of a film more or less depends on the capabilities of a film director.
On September 1, 1939, Hitler invaded Poland from the west; two days later, France and Britain declared war on Germany, beginning World War II. On September 17, Soviet troops invaded Poland from the east.
By a well established convention the dates are generally given as 1 September 1939 to 2 September 1945. The Second World War has start and end points that differ slightly, depending on national perspectives and on what part of the world is being described. In Europe, the war began with Hitler's attack on Poland, September 1st, 1939. Britain and France had defense treaties with Poland regarding a possible German attack, and declared war on Germany two days later.