And under the nazi flags are markers for buzz bombs, the Vergeltungswaffe 1 (V-1 flying bomb)
For that matter, under the trains, there is the vertical bomb, I get that, so, what is the angled bomb?
Sobriquet had the answer " Straight bomb is for a conventional drop and depart bombing mission, slanted one is a dive bombing mission. Under that is a broom,for a "clean Sweep" -destroyed enemy, fired all ammunition, dropped all ordnance, returned undamaged "
Steve found a likely answer on wikipedia: skip bombing attacks
Wiki says "P-47 pilots frequently carried two 500 lb (227 kg) bombs, using skip bombing techniques for difficult targets (skipping bombs into railroad tunnels to destroy hidden enemy trains was a favorite tactic)."