That they will be used as standard infantry. If they would be guards or non combat they would get worse gear. As specialized soldiers, they would get tanks, artillery or whatever. Also it is Russian gear and not North Korean.

In other words they will be used for human wave attacks.

I think it shows that they're taking on standard combat roles. The alternative could be them strictly filling non-combat roles, such as logistics/cargo transportation or engineering-type work like building trenches and other fortifications.