Post formatting on phone difficult.
Anon from earlier bread 5281. Kept digging on possible bolthole/DUMB sites using bodies as shield. Consistent symbolism. Planefag arch, owl, diamond, cross, eye, triangle. JFK and Washington named. Parks, baseball diamonds. Bodies of water, highways/egress routes.
Impossible to filter through all possible sites except where symbolism is obvious.
US military cemetaries worldwide. Florence, Italy appears to have its own Tomb of the Unknown Soldier equivalent. France and UK.