Stupid Star Wars battlefront 2(PC version)question

This may sound like a stupid question but I have checked both the manual and online FAQs and none of them seems to answer this question and so this place is my last hope for an answer.

I finally got Battlefront 2 to work on my modern PC and in many ways it is a better game then the original, there is just one problem. I can’t figure out how to change my character class when I respawn and I have looked everywhere. It is becoming a real problem because in galactic conquest mode every time the enemy gets walkers I am stuck as the soldier class and I don’t have any heavy weapons to take the thing down with so I can’t win, they wipe me out in about two minutes. If you know how to change my class so i can get heavy weapons please let me know, thanks.

Sorry if this is a stupid question but I have looked everywhere else for the answer.

Well I guess my game is glitching because that is not happening, weird.