American football defense group weight secret service group is usually 7 persons

What are the positions in American football
American football is divided into three parts: attack group, defense group and secret service group. There are 11 contestants in each group. The secret service team is usually 7 people. The secret service team will send a number of professional football players to take on this responsibility in the special circumstances of kicking free kicks, abandoning kicks and returning shots. The attack group is a football team that attacks people's brainsThe rules of American football
The offensive method of American football is similar to that of six man football. The team holding the ball (the offensive side) has four offensive opportunities to advance ten yards forward (the defensive side's arrival area). Each opportunity is called a down. When the attacking side successfully advances ten yards in four times, it can get four more chances to continue the attackAll rules of American football
Rules: American football matches are played between two teams with a maximum of 53 players (NFL rules). Both sides send 11 players to play, and can change some or all of the players at any time. The one who gets the ball control is the attacker, whose goal is to push the ball to the opponent's position as far as possibleAmerican football team composition
Each team includes attack group, defense group and secret service group attack group: Defense Group: Secret Service Group:
American football rules
There are 11 players on both sides of the game, one is the offensive group, the other is the defensive group. The purpose of the attack team is to push the ball to the opponent's position as far as possible, and strive to cross the scoring line and enter the opponent's end zone for scoring. There are two methods of attack. The player runs forward with the ball (charging the ball) or passes the ball in the air (passing the ball)The rules of American football
Team members. Each detachment consists of three types of players: the attack group, which is responsible for the attack; Defense team, responsible for defense; Special team, responsible for special situations - kick-off, shot and kick-off. In any case, one side can only have 11 players on the court. The clothes of American football players are as colorful as the playing field. KickoffHow many people are there in the offensive group, the defensive group and the special group of American football
They stand at the back of the defense and come forward to destroy the opponent's attack when the attacker penetrates the defense or a receiver gets rid of the defense. It is subdivided into free safety (FS) and strong safety (SS). 3. kicker of secret service team
Who knows the rules of American football? Explain the situation of each team in NFL. Thanks_ Baidu knows
American football game rules: during the game, the offensive side will play 11 offensive players; The defenders played 11 defenders. The attacker must advance more than 10 yards after four attacks. Every 10 yards, a new round of 4 attacks will be started. If the attacker can not advance more than 10 yards after 4 attacks, the attack and defense will changeAmerican football problem
Please introduce the rules of American football in detail, and then send a picture of the standard field. I don't know anything about football, so people who understand it better cooperate with the picture (for example, tell me what a certain area is used for) thank youChinese English translation of various positions of American football
Guard (g for short): there are two sentinels on both sides of the center. The sentinel should be able to move quickly to open the way for the bearer. Stumble (t for short): there are two stumbles on both sides of the whistle. Most of the stumbling forwards are heavy players who want to block the other side's defensive players