There are 11.
Do you mean the national team of Germany? This is called "Deutsche Nationalmannschaft" - German nationalteam, or simply "die Elf" - the eleven (as there are eleven players in each team).
Argentina is a very big country. It has many different sports team. But in soccer team, there are hundreds of soccer teams.
11 people are on a soccer team. I Think
Well all national teams, should have 11 players on the field. However they are usually allowed 23 players in the team, for competitions such as the World Cup, Confederations Cup etc...