1946 campaign question So for a campaign mission I've flown, pacific us, japanese air strike on our carrier group, mass slaughter, entire squadron lost, except me I'm able to limp my fighter over to the second carrier after our home sinks. Mission result counts as "landed". 

Now when I get to the results menu, I am only given the option to refly, not continue. 

What is the criteria for a "passing grade" as it were for a dynamic  campaign mission? Is everyones survival required?