 Complete the following phrase:  In 1779, Washington ordered the 2nd and 4th Continental Light Dragoons equipped temporarily as infantry, and deployed the 1st and 3rd Continental Light Dragoons and Pulaskis Legion to the South to join local militia cavalry and to ensure the area remained American during an unexpected counter-offensive. Battle engagements in South Carolina largely seriously attrited the 1st and 3rd Regiments in the spring of 1780, who amalgamated into a single unit. Following the capture of Charleston, South Carolina on 12 May 1780, the remts tried to regroup and reconstitute in Virginia and North Carolina. In August 1780, Armands Legion was with General Gates at the disastrous 