TIP for clearing the Expanded Islands
If you're like me and have a lot of time and patience and aren't in a rush to clear the islands around your main island- then this tip is for you.
Almost every camp can be killed with just an MMA with 1 recruit. If you have 4 MMA and Dracula. This will speed up the clearing.
I park my general on the first sector and just attack with my MMA and Dracula. Dracula can take almost all the units except Sword Master. The MMA does all the work really. It will save you a lot of resources and units overall doing it this way.
There was one boss that has like a crap ton of health. That guy I had to use the Assassins Buff from the epic shop. Make sure you save up your Star Coins for the Assassin buff and save the buff for the boss. First you have to clear all the units so only the boss remains.
Took me a few months to clear up to the 5th sector.
The reason is the MMA has first strike with reason high damage. He will take out a bunch of units or at least 1 unit. Remember to send the attacks out every 2 hrs (recovery time)