A while ago I watched this movie about some nazi super soldeirs that couldn't die because they were zombies, I also remember that the commando group that went to the bunker (where the zombies were) were trying to fix something not sure what. Can anyone help me with the title? Thanks

Outpost?

This is just a guess, I haven't actually seen this one.
Horrors of War (2006) - Plot summary
Evil Dread - Horrors of War 2006 movie review

If it's not the one, it's similar and you may want to watch. Other nazi zombie bunker movies are Shock Waves (1977), The Bunker (2000), S.S. Doomtrooper (2006).

Hope that helps...