The most difficult warfare riddles

The Principality of Sealand is an unrecognised self-declared state (or micronation) located on a British-built platform in the North Sea. Its mass consists of HM Fort Roughs, a former Second World War Maunsell Sea Fort, off the coast ofSuffolk, England, United Kingdom. While it has been described as the world's smallest country, Sealand is not officially recognised by any established sovereign state.

When going into battle, armoured battleships of the late 19th to mid 20th century still used a battle line formation in which one vessel followed another. However, moving ahead of the enemy line on a perpendicular course (crossing the T) enabled to use both the forward and rear turrets, while the enemy could user only front turret.

The NORAD command center built for the film War Games was the most expensive set ever constructed up to that time, built at the cost of one million dollars. The producers were not allowed into the actual NORAD command center, so they had to imagine what it was like.

Federico García was a Spanish Republican and anarchist militiaman during the Spanish Civil War, commonly thought to be the subject in the famous Robert Capa photo The Falling Soldier (September 5, 1936). Picture Post, a pioneering photojournalism magazine published in the United Kingdom, had once described then twenty-five year old Capa as "the greatest war photographer in the world."

The 8.8 cm Flak was a German 88 mm anti-aircraft and anti-tank artillery gun from World War II. It was widely used by Germany throughout the war, and was one of the most recognized German weapons of that conflict. Development of the original model led to a wide variety of guns.

The Hundred Years' War was a series of conflicts waged from 1337 to 1453 mainly between France and England but around 20 countries took part in it. The Grand Duchy of Moscow wasn't one of them.