Mines were developed to be capable of being dropped from aircraft. Even if they floated on the surface of the water, they could be placed in enemy harbours. Originally, contact mines were used which meant that the mine was to make contact with an object before it exploded. Boats, aircraft and submarines were all capable of laying mines. Eventually new technology was implemented where mines detonated before they came into contact with a ship. The mines were equipped with magnetic sensors with an adjustable sensitivity level. As ships passed by, they would go through the earth's magnetic field and concentrate it at that point. Mines would detect this effect and detonate. New methods are clearing mine fields involved using large electromagnets dragged behind ships and low-flying aircraft. This had minimal protection, therefore electrical cables were developed to be dragged behind ships, which passed a large current through the seawater.
             Guns played a vital role in battles during the Second World War. Machine guns were very prominent, and found in three categories;
             1) light machine guns: they were generally used for offensive purposes against personnel and lightweight, therefore they could be carried by the soldiers. Magazines (containers for ammunition) were used to feed this weapon.
             2) medium machine guns: these guns were generally used for defence and were mounted on large tripods. They could not be easily carried, but could fire large quantities of bullets for longer periods of time.
             3) heavy machine guns: their primary use was anti-aircraft because of their good range and penetration. Although they were not very mobile and awkward.
             Bazookas received its introduction in World War II. Invented by Americans, it is a short-range weapon with low accuracy, and one of the first WWII weapons to use launch rockets. The bazooka was fabricated to be more portable and lightweight since it was being used by the infantry on the grou...