The ouvrage was at the southernmost end of the Alpine Line and overlooked the Mediterranean Sea coastline at an altitude of 21 meters between Nice and Menton, facing towards Italy.

The ouvrage and its advance casemate at Pont Saint Louis controlled the coastal roads along the Mediterranean.

An armored train attempting to enter French territory on the coastal line was fired upon by Mont Agel and damaged.

A rumored Italian infantry attack prompted heavy French fire, but failed to materialize.

Retreating German troops blew up Cap Martin's Block 3 to prevent it from firing on their rear.

[16] The Casemate du Pont Saint Louis was an advanced defensive work supported by Cap Martin and manned by the 96th BAF.

It was the only fortification directly on the seacoast, located at the frontier between France and Italy, and was intended to block any advance along the coastal road.

The road and post occupied a narrow shelf between a cliff and a steep slope to the sea.