"Crossing the T" is a naval tactic that goes back to the day of sail. At this time, due to poor communications, battle groups would sail in the fighting column formation. This allowed the flagship to lead a battle group that stretched for miles by a simple "follow me." The goal of the fighting column was to maneuver your line of ships across the bow of your opponent, forming a T. This allowed you to bring all your flank guns to bear on the enemy while they could only return fire with the smaller bow guns. This tactic was used well into WWI and WWII, including the decisive Battle of Jutland and the battle for the Coral Sea.

Today the Fighting Column and "Crossing the T" are alive only in Naval history books, with modern weapons such as the 688 submarine, Harpoon anti-ship missiles and aircraft carriers most battles take place from great distances, the opposing forces almost never see each other.

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