In this scenario there’s a Japanese fleet in sz26 with several air units, carriers, a dd, and a bb. Additionally there is a ftr/tac combo in sz6. US has a small fleet in sz10, air to scramble to help cover said fleet, a blocker in sz12, and still hold Hawaii. Japan sends all the air in sz26 plus the air from sz6 to hit sz10. Additionally, they send their single dd to clear the blocker as the NB is not in their hands and they can’t kamikaze their planes.
Is Japan obligated to stay in sz12 till the end (regardless of the result) or can they go for a single round and then retreat if they survive? Does the order of battles play a part in whether the dd can retreat or not? IE, say the sz12 is rolled first and the planes theoretically could survive, so it forces Japan to stay vs retreating. Or could the dd retreat if the sz10 battle has already been rolled and the ftr/tac from sz6 didn’t survive said battle?