Coat colors vs characteristics in the German Shepherd Dog

are the characteristics in the different coats which theres I know sable, black and tan, black and white of shepherds the same??

Do they all act the same towards Kids and will protect them? I have been looking for about 2 years now for the right shepherd for our family my husband is a Soldier in the Army so its just me and my kids.

I also don't want the dog to attack or dislike my husband. What should I do about the dog not being associated with my husband when he gets home??.

I don't know if I want a male or a female either whats the difference in the two?? Are they easy to train?? Im a female will it listen to me or a mans voice??