Liberation Day is the first level in Starcraft Tower Defense.
You start with 5 Marines bought and Jim Raynor, for now you can't buy anything. You must set each tower on the high ground. Then the first wave of 8 (12 on hard, 16 on Brutal) Marines comes.
The wave brings in 10 (14 on hard, 18 on Brutal)
You get in 3 marines and go against 36 Marines
Against 12 (16 on Normal, 20 on Hard, 24 on Brutal) Marines and a Transport which is a boss, and can asttack your Towers. After the wave is complete, several Civilians are placed on high ground after this.
12 (20 on Normal and Brutal, 24 on Hard) Marines (4 Firebats on Brutal) and 2 Vikings (4 on Brutal)