The cartoon was a story about a earth in the future , they had a space fleet and earth was constantly at war with some alien fleet, lots of space battles, star ships that kind of thing, I think the earth guys wore blue uniforms, I used to watch the show on sundays when it came on TV , on channel 9 or 11 here in New York. Though Iam not sure if this was a 80's or 90's cartoon, I think this was a japanese cartoon but I am not sure. If anyone can help, I really appreciate it.

Maybe,.

Star Blazers

Possibly "Exosquad" (1993) (http://www.imdb.com/title/tt0106842/). The humans aren't wearing blue uniforms, but they always seem to be fighting blue aliens.

Nope , not the one but thanks anyway

Nop not the one, thanks, though.

Shot in the dark...

Robotech

Some of the uniforms are blue?

I know the show you mean, I think I finally found the name... its called Exosquad