The West Batteries were the first concrete emplacements to be installed at Fort Stevens, during the Spanish-American war. They featured the latest technology: six 10-inch rifles, each positioned on a disappearing carriage. The West Batteries contained Battery Mishler, Battery Lewis, and Battery Walker.
The French-named and designed parados refers to the manmade embankment of earth at the rear of the west batteries, built to protect soldiers from an enemy approaching from the rear. The Army installed a railroad trestle to transport building materials.