Veteran Mode!!

I say to beat the game on veteran mode you should really take cover alot in the game and make sure you are not out in the open. And you should be with your men and stay with your men don't wonder off somewhere without them then it will make it harder. I hope this helps!!!

Duck in and out of cover, with always a semi-automatic gun. Use your gerandes a lot. Stay with your team, they will usally kill 50% of enemys, and watch for gerande spam. In the second to last level, after you kill the flak 88's (there are 2 rocket lanchers to help) in the right buliding there is a sniper rifle. Snipe till they are rally close to the end of the stairs and thats that.

I suggest beating it with co-op first off.second take a lot more time with the missions,there is no time limit

Pay attention at all times
Dont run straight into a battlefield
Dont stay out in the open for too long
NEVER run out infront of a turret (i would suggest when the coast is clear run to the nearest bit of cover then crall along the ground)
Use the best guns possible
Dont cheat by using a modded controller

I say use alot of cover and if you need to get through long distances without cover you should do what I do and that is to sprint jump and go prone and repeat until you get to where you need to go and also it's very annoying that you need to be the first one to move up before all the others do so don't just stay in one spot wasting your ammo just do the sprint jump and lots of cover and you should be fine and grenade or two never hurts.