stuck at this mission

Hi , need a little assistance here.

So far up to this point, we had within the code, a fight between two individuals.

I am stuck at this mission particularly when I have to implement a fight between two armies of two each; Each army has a front unit and back unit.

There are 2 scenarios Scenario 1 front unit is a Lancer and attacks the other side which damages both the units (the other side). Vice versa if the other side has a Lancer. Scenario 2 back unit is a Healer and whenever the front unit attacks, the Healer heals either 0,1,2 HP.

How do I implement these 2 scenarios into the code?

Thank you.