I'll post after Enalias posts, and hopefully LupusIntus posts soon. I'll post after those two, or if Lupus takes longer than expected, I suppose I'll go after Enalias.

[quote=PhoenixEye9]
Name: Milo Cash 

Nickname: Music Man

Gender: Male

Age: 26

Appearance:[img]http://fc05.deviantart.net/fs35/f/2008/310/f/d/fd01a4b63f4b290c45754298c67af5b9.jpg[/img]

Type of Character: Fresh-outta-boot-camp-marine

Rank: Private

Armor/Clothing: Standard UNSC Armor with [url]http://4.bp.blogspot.com/-0nKyj8RxcxI/UnELheDRkEI/AAAAAAAANmU/p9tWD8Gl42Y/s1600/Girly+music+tattoos+and+music+note+tattoos8.jpg[/url] printed to the front plate and helmet

Weapons: M6E Standard Issue 4 clips, M90A 12 Shells (mag and reload), 2 knives (one standard issue, the other more ornate a family gift)

Equipment: 6 String Acoustic Guitar, Picture of his girlfriend, rations for 5 days 

Personality: I'm not much of a sentence person when it comes to personality description so I can list, if you truly want sentences I will do them as needed
-Loyal
-Calm in battle, panicked before
-Others before self

History: Private Milo Cash, originally an up and coming musician who realized the threat that was coming, and did what he knew he needed to to help humanity. Joining the military he knew he gave up on the future he worked towards since he was young, but he knew everyone would understand and maybe a few would join him. His training kept him on the same planet at least, but right as he got out of basic the [i]Spirit of Fire[/i] came and had to infect the planet. Ordered to keep the peace Milo went to post, but when orders stopped and hell came out, he went to where his girlfriend, Jocelyn was New Alexandria hoping to find her and keep her safe. Now that he's arrived he doesn't feel like this will end well

Other: Guitar player and singer,
"One down, 50 billion to go!"
[/quote]

A few things to fix, and then it will be good to go.
One; why did the Marine Corps allow modifications to his armor with the music notes on it? It's an altogether negligible detail though, so if you can't think of something, that's probably fine. 
Personality needs to be in sentence format. But it's pretty easy to make sentences, just basicallytake the list and say "He is (blah blah blah). He is also (blahblah blah). Around people, he is (blah blah blah)" Like that.
Then, is his girlfriend still alive? If so, if she missing or traveling with him? If she's surviving with him I'd ask you to make another sheet for her. If she died, how has that loss affected your character?