Please understand, most of the reason bombers and fighters do not bare common or accurate numbers is on purpose.
Imagine seeing the bomber that 8 men lost there lives on,and one of them happens to be your father,or your grand father.
This is not a history documentation, it is a movie based on something In history.
The last thing any of you would want for your family members is some 13 year old net nerd looking up your family members bomber number so he can find out who died in that "HELLA COOL EXPLOSION WHERE THE WING RIPS OFF AND YOU CAN HEAR THE GUY SCREAM ALL THE WAY DOWN TILL HE HITS THE GROUND!"
get it?

Some things are just to close to home guys.