Minelayers are people or ships that place explosive mines in the water to destroy enemy ships.
Minelayers are important in wars because they help protect their own ships and destroy enemy ships.
Examples:
The minelayers carefully placed the mines in the water.
The minelayers use special ships to do their job.
The minelayers are very brave to do such a dangerous job.
The minelayers make it hard for enemy ships to come close.
The minelayers are like underwater trap makers.
The minelayers are like the protectors of their own ships.