MMM is for the combination of Marines, Marauders and Medivacs from the Terran strategy. Unlike mechanical terran construction, MMM moves quickly and easily. They can hit your enemy in different places at once.
The advantage of this specific strategy is that these units work perfectly in conjunction with each unit. Stim Packs are very effective and allow Marauders and Marines to be strong in combat, then Medivacs provide support and heal them after they go with their stim pack. One more thing, you can then focus on upgrading your infantry in Engineering Bay, and for each upgrade, this will benefit your marines and marauders.
This 3M strategy also allows you to convert your infantry into Medivacs and then place them somewhere in your enemy’s base. You can do this on your enemy’s mineral lines, or in other places to split your opponent’s army.
So the Marauders are a good support unit, which can be a game changer if used correctly with the right combinations. Also, keep an eye out for air units and focus fire on armored units for maximum damage.
Here’s a basic MMM build order:
1. Get a cap of 10 SCV, then make a Supply Deposit.
2. Continue to SCV, then at 12 cap, go with Barracks and do a non-stop SCV bomb. Also get gas and have orbital command after the barracks is built.
3. At 16 Cap, build your second depot, then set up a tech lab in your barracks, then pump out those marauders.
4. Build the second barracks, get the MULE when you finish the orbital commando and produce the reactor in your second barracks. Pump marines and marauders continuously.
5. You can then build a factory, then a starport to make a medivac, or probably a siege tank.
6. When you have the MMM combo, it’s time to push your enemy.