In the near future there is a very good chance we might start to colonize the moon.One of the constructions we might build there at that time will be laser turrets.
One of the most important reasons to build these is not warfare, but because of its defensive capabilities against falling space debris and meteorites.Unlike earth, the moon does not have an atmosphere to burn these things up before they can impact and destroy anything we might build there.
Besides asteroid defense, Laser turrets have many different utilities like clearing the orbit from debris in order to avoid kessler syndrome and of course warfare.Perhaps the most ambitious way to use this laser is in propulsion systems like starlink, and this laser system could be used to actually propel a solar sail satellite to other stars.
This laser turret model is based on real world examples of military laser systems developed as anti-missile defense system and therefor is actually build able in the near future. Unlike many pure science fiction laser models that have no basis in realty.
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moon landscape information