Bad day

So I get up yesterday and go on a 8 mile army ruck march which I hate more than anything else in the army. I parked my car in a dirt parking lot across from where we started thinking I've parked here many times my car will be fine. Fast forward an hour and there a Sgt near my car which is now diagonal and I'm thinking I don't remember parking this diagonal. Well what happened was the guy was backing up a government licensed dodge ram 3500 series with flat bed and hit my bumper and proceeded to push my saab 2ft or so. You can see I circled the truck piece that hit my car which is essentially the frame. I was very surprised how well the bumper held up considering all the force and pressure was on my car and not his truck since he hit my car using his frame. So it looks like I will have to wait 14-21 days to get this sorted out since I have to make the claim through the government. Oh then later that I lost my under tray of my car on the highway probably caused by the bumper flexing and cracking it. Only good thing I can say about it is my bumper needed new paint anyways. So I want to get a different bumper for this car what does everyone suggest would be a good upgrade? I haven't gotten an adjustment yet but I assume it will be over 700. The first picture I circled the dirt that was pushed onto my tire from being moved. The second picture is damage, the third picture is the dirt line of how far my car moved, and the last picture is the part of the truck that pushed my car.