A group of 4 soldiers, 6 policemen, and 5 generals are to be seated in a row of 15 seats. In how many ways can they be seated given the following conditions:

1. The generals are to be seated next to each other.
2. Two of the soldiers are on one end and the other 2 are on the other end of the row.
3. The policemen are seated in consecutive seats.

Please help me solve this one, and give me solutions. Thank yoyu.