Despite heavy bombing during the invasion of Roi-Namur in the northern Kwajalein Atoll, a number of concrete buildings remained standing, including the Japanese command post. This building is now listed as a historical landmark, although spalling of the concrete has made it unsafe to enter.
Guns pointing toward the outer reef did not deter the invasion, which came from the lagoon side.
More concrete blockhouses still stand on some of the island's strategic points.
Shifting sands occasionally uncover or bury some beach bunkers.
