Hidden Objective(s): Destroy the Japanese convoy before it escapes; like we haven't had a ton of the "destroy the convoy" objectives. This one is located within the vicinity of the two main island you are attacking during the first main objective. During that time when you have the F4U would be the best time to sink the enemy convoy. There are around 6-7 ships in the convoy, but you only have a few minutes to destroy the gun installations so leave them if you have to. When you have sunk all the ships in the convoy you will have completed the hidden objective.
Secondary Objective(s): Destroy 30 military installations on the island; Probably one of the hardest secondary objectives you have to do in this campaign. You must take out 30 military installations while simultaneously attacking a train that is somehow very VERY armored. You best shot would be to get a good run on the train then break off for a few secondas and take out some instatllations. More will spawn in as you move down the valley. If you do not take out the train in time however it will escape and you will fail the mission. Taking out the 30 installations will complete the secondary objective.
Completing this mission on any difficulty will unlock the B-29 Superfortress.
Getting a gold rank on this mission (completing ALL the objectives) does not earn anything more.