Likely you were observed driving to your location by the Tu-2 that was strafing you, the tank knowing you were in a soft vehicle loaded HE rounds and shot the barracks where you were reported to be. I'll check your film later to see where you were, but he told me you were near the barracks and I assumed you were between them so I was shooting the tops of them. Even if you were on the wall, HE rounds will damage vehicles on the other side of it if you hit it.