On Paper, I would say the squad is authorized the following:

[b]Leadership[/b]
1. Squad Leader - Korporal
2. Assistant Squad Leader - Senior PFC or Junior Korporal
[b]Machine gun Team #1[/b]
3. Gunner
4. Asst. Gunner
[b]Machine gun team #2[/b]
5. Gunner
6. Asst. Gunner
[b]Scout Team[/b]
7. Scout
8. Scout
[b]Rifle Team[/b]
9. Rifleman
10. Rifleman
11. Rifleman
12. Rifleman

On paper, the squad is authorized 12 soldiers, but in reality, we show up with seven. We can go without the Asst. Gunners. Priority fill would be to the MG gunners and Scouts. Then the riflemen. The Asst SL would be a dual role for some "High Speed" PFC.