Here's the next part, hopefully it's better than the first. Sorry this one's short but its sorta late and i'm tired
A few monthes pass and it grows closer and closer to the First Battle of Earth. One of the Covenant CCS Cruisers has found Mars, the last defense before Earth. The fleet surrounding Mars was very weak and the cruiser ignored half of them and destroyed a large amount. Immediately they send down Jackel scouts armed with only plasma pistols and modified shields so that they nearly never fail.
At the nearest base, a couple of Marine snipers spot the Jackels on patrol. "Bet you i can kill more than you, Dave!" one marine says as he aims up a shot.
"Please, i could take you with my eyes closed." Dave says confidently.
Sniper shots ring through the air as one by one Jackels fall to the ground. Then, the Spartans walk out of the base. "Let's go move the bodies into the base. Collect the plasma shields, we can use them later." Tyler orders.
The ground begins to shake and dust flies through the air as the CCS Cruiser approaches the stronghold. "Aim all artillery at it an fire at will!" a marine orders.
"Spartans, grab your lasers and fire."Tyler commands.
The shields of the cruiser sparkle and shimmer, however, they are too strong. It seems as if nothing could break these shields. "Everyone, hold your fire!" Tyler says "Fire again on my command."
The cruiser begins to charge up its excavation beam. The marines stare at the glowing light of doom. They all look scared and are ready to fire but they don't quite yet. The beam charges fully and is unleashed upon the base. "Fire on the excavation beam!" Tyler yells.
All artillery and Spartan Lasers fire on the front of the ship and the beam flickers until it fails completely. Immediately the ship flies back to a safer distance and begins to release squads of Elites and grunts.
"Spartans, follow me." Tyler orders.
"Where are we going?" Miranda asks
"To war."