Combat 5 is the 12th of the 24 Puzzles in Subterfuge.
Take control of Feld.
Your opponent has a Lieutenant defending the target outpost, and it makes it harder to take. Tap the Lieutenant for more details on his abilities.
Get a better feel for the Lieutenant by sending a sub to his outpost and examine its combat preview (tap the sub, then tap "combat preview" in its info panel).
To see the solution click Expand below.
Move at least 8 drillers from Vaccarino to Garfield, or vice versa, and then direct all of the subs at that outpost to attack Feld.