Autograph Letter Signed ‘James Keith’, to ‘My dear Drummond’ [Captain John Drummond], asking him to settle a debt by paying Mr. Napier, one of a complicated series of financial obligations at Russian interest rates discussed in this letter, giving news of military promotions among their colleagues, including his two aides-de-camp which the King will allow Keith to take with him “in case of a more serious Campagne”. 2 pp. 9 x 7 inches, in very fine condition, with the address leaf. Potsdam, 16 September 1753. “… the expense which our late Camp tho short has put me to, has drained the little ready money I had …” An uncommon autograph. James Francis Edward Keith (1696-1758), known as Marshal Keith, Jacobite solder, served in the Spanish and Russian armies, and was created Field Marshal by Frederic the Great of Prussia in 1747. Marshal Keith was mortally wounded at the Battle of Hochkirch (1758).