your most affectionate brother , john general sir henry clinton , commander in chief for north america , to colonel his grace duke of pardloe , 46th foot sir , you are hereby ordered and directed to assemble and re-fit your troops in whatever manner you deem necessary , and then to make junction with lieutenant colonel archibald campbell , to march upon the city of savannah in the colony of georgia , and take possession of it in his majesty 's name .