Enemy move to target, upon reaching target, stop moving and perform attack animation

I'd like to achieve an enemy unit moving towards a target game object that isn't moving. Once reaching the target object, the enemy stops moving, and stops it's moving animation as well, as well as starting it's attack animation.

When I can achieve this, my second step is to make the target game object have a certain amount of health, and each time the enemy attacks it, 1 health is removed from the target's total.

Can anyone guide me in the right direction? A direction that doesn't involve me trying to dissect a much larger script that does all kinds of things I don't want? This would be much appreciated!