Defensive end is the name of a defensive position in the sport of American football. United States simply as football, is a competitive team sport that is both fast-paced and strategic. ...
This position has designated the players at each end of the defensive line, but changes in formations have substantially changed how the position is played over the years.
Early formations, with six and seven man lines, used the end as a containment player, whose job was first to prevent an "end run" around his position, then secondarily to force plays inside.
When most teams adopted a five man line, two different styles of end play developed: "crashing" ends, who rushed into the backfield to disrupt plays, and "stand-up" or "waiting" ends, who played the more traditional containment style. Some coaches would use both techniques depending on game situations.
A defensive tackle that lines up directly across from the ball (and therefore, is almost nose-to-nose with the offense's center) is often called a nose tackle or nose guard.
The strongside linebacker usually lines up across from the offense's tight end; he is usually the strongest LB because he must be able to shed lead blockers quickly enough to tackle the running back.
Because of this, the middle linebacker is nicknamed the 'quarterback of the defense'.
The Mannerheim Line was a defensive fortification line on the Karelian Isthmus built by Finland against the Soviet Union.
The Mannerheim Line streches from the Gulf of Finland to Lake Ladoga.
The first plans for a defensiveline on the Karelian Isthmus were made after the Finnish Civil War by Carl Gustaf Mannerheim, but they were ignored when Mannerheim resigned after the war.
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