Options: There are several conventional ways to get experienced pilots into front-line units.
Mogami Method: This is fairly simple; you use "Disband" to combine two fairly depleted units into one good unit, while the disbanded unit goes into the reinforcement queue, and comes back in 120 days. The problem with this is that last part; couple that with the 2-3 months it takes to train on-map to even a decent level, and that's 6 months that unit is tied up in only training. Too long, and I think Japan can't pull that many units offline for that long.
Disband/Withdraw: An AE modified Mogami, you can disband a good unit, and send all it's pilots into the pool. This is handy when you MUST withdraw a unit and gives you the opportunity to distribute the good pilots. But I wouldn't do this either for a unit you don't HAVE to withdraw, for the same reason as above.
The Answer: FRAGMENT DISBAND!: The answer is fragment disband. Fragments are NOT parent units; disbanding PARENTS you have to wait 120 to replace those plane and pilot slots, but if you disband a FRAGMENT, you don't. That is the key on this.
Let me demonstrate via picture
Situation: I recently had a nasty CV battle off New Caledonia. Shokaku ate 2 bombs and is heading for some repairs. Her KATE group scattered to several ships; I went ahead and disbanded those fragements to reinforce the Kate units on those ships. Only problem is that this stripped Shokaku-3 dry; only 1 pilot left!
I don't want to replenish with 23 Rookie pilots. They will just die quickly and not hit anything. Shokaku-3 is too valuable to do that. So, I flew her to Japan for a different way......
At start, as Japan you get one very good Land-Based TB unit in the Home Islands, Yokosuka Ku-2. Only problem is that it is stuck there. No problem, you can still use the pilots in this unit, and in effect turn it into a TRAINING unit.











