What civil war captain used aerial balloons to spy over battlefields and map opposition troop movements?

Was famine caused by sepoy Mutiny? What did the Escalation of the war in Vietnam began with? How many Christians died in the Holocaust? How did Johnson and the Radicals come into conflict? What did the large size of European armies make obvious? Who invented the mun? What did the vietcong use tunnels systems for? What happened in the factorys in World War 2? What was the date of The assassination of Archduke Franz Ferdinand? What is different about MP9? What was the battle in world war 1 that lasted 6 months in 1916? Who were evacuated from the west coast during war world 2 because of their ethnic origin? What is the triad of nuclear weapons that the US relies on for national defense? What is the historical significantce of the capture of pres. Aguinaldo in Palanan in march 1901? What are important events that happened after the US Civil War? What did Samuel maverick invent? What is the usual age for the military recruitment? Why did osama bin laden go to Afghanistan in the 1980? What nation was sacrificed at the Munich conference by the allied nations to achieve peace in your time? When was Rotary Watches created?