The Consul is a handy construction unit that can run fairly quickly and provide buildpower wherever you need it.

Useful for producing extra units while on the move.

It's also used to build mines and walls for securing your flanks and areas of high tactical importance.

Combat engineers also offer an alternate path into taking sea territory without a shipyard, as they can build T1 construction ships, coastal torpedo launchers, amphibious bots, and even destroyers.