However , in mid-November , the PAVN 9th Regiment arrived , having retreated from the encroaching Royalist troops of Operation Black Lion V .
The Royalist regiments of Black Lion III enjoyed three weeks of quiet after taking Salavan .
In mid-November , the PAVN 9th Regiment arrived , having retreated from the encroaching Royalist troops of Operation Black Lion V .
The Royalist regiments of Black Lion III enjoyed three weeks of quiet after taking Salavan .