Armored Pillbox

Overview
The Armored Pillbox offers up to four blocks of protection, which is represented by the light blue template that appears when placing or moving defensive buildings. It's essentially a slightly improved version of the Commando.

After the 1.3 Patch, the Armored Pillbox will defend against encounters on the Outpost. It will take part in such battles within its defensive range.

Trivia

 * Despite having less visible weaponry, it is still more powerful than a Pillbox.