It's a considerable toss-up which Veteran level is easier between this one and 'Black Cats', however, I prefer this level because one who enjoys blowing stuff up, like myself, gets to accomplish a great deal of it.
This is the mission, the token tank mission, if you will, in which you pilot a Russian tank through German countryside. As you start, you really have only way to go - forward. As you progress ahead a bit, you will notice a gentle left turn, and then a building straight in front of you. You will realize that the buildings are crawling with Germans and their Panzershrieks rocket launchers. These guys are vital to eliminate first all throughout this level.
To the left of you is the first of 4 artillery units you must destroy. Also, take it out quickly and move ahead a bit to take out another one down the road a bit. Here is your first tank encounter of many. The trick to these guys, on Veteran, is to keep moving while you fire at them. If you are stationary, ground soldiers and tanks will overcome you quickly. This area opens up to quite a large area that can be overwhelming with all the action directed at you. Make sure you use your weapons effectively. That flamethrower helps out quite a bit in the trenches. Keep moving forward until you finish of the 3rd and 4th artillery. The easier part of this level is over.
From this checkpoint, you have a small downhill path to follow that leads to a radio tower and several tanks and ground soldiers. Pick these off from a distance, and make sure to destroy the bunkers as you go. You will be required to destroy the radio tower, so do so and move on. Be careful, because this area is tighter, and is crawling with ground soldiers and their rockets. You might now see it, but you will come to a fork. I found the left path was far easier then the right path, and it gives you a surprise attack on the 2 tanks waiting to ambush you.
There are 4 tanks, a million (not really) rocket soldiers, and 2 towers with a bunker in this tight area. Keep moving and keep destroying. This area might give the most trouble. Once the last tank is destroyed, you should get a checkpoint. If not, progress ahead and wait before you drop down the hill to the final area.
Again, there is a left and a right way to go. You are less exposed going the left way, versus having to combat 4 tanks if you go the right way. As you follow the dirt road down the hill here, aim to the right and pick off as many rocket soldiers as possible, as well as the handful of tanks and towers bearing down on you. Remember to keep moving as you take them out. This area has no checkpoints until the end, but I managed to burn through this area, and the whole level, without dying - I am sure you could too, and get that achievement if you haven't already.
Once you kill the several tanks in this area, you will see a train to what should be your left, or, if turned around, it is opposite the hill you came down. That is your goal. There are several soldiers, a tank, and a hidden tower to finish off to get to there. Once that's all done, watch the small cutscene as you and your Russian friends get on the train to get some more German kills.
Congrats, another 30gs to your total. Check the video for an idea of what to expect.