What is 19 hundred hours in military hours?

In World War 1 what sea became the major area for hostilities in the Atlantic region? What does D- Day mean? Government actions on the home front World War 2? What are facts about Britain in the 1750 - 1900? How did sergei esenin kill himself? What is value lee Enfield mark 1 made in 1897? How was Mussolinis racial attitude? How did Peter Pan relates to the cold wars? Why did the US support the mujahideen in Afghanistan in the 1980s? What countries are allies of each other? What was the Red Army's final act in World War 2? What position could a black man hold in the civil war union army? When did Angolan Civil War happen? How many soldiers from the UK that survived Dunkirk went on to fight on D Day? What is another word for a 'number of soldiers'? Germany's final counterattack was? Who were the Generals in the Battle of Shiloh? Why did World War 2 cost so much? The South was likely to name a battle after? Who has all the answer to the world problems?