a 400-strong composite battalion of Royal Marines and Royal Navy personnel in the Battle of Bladensburg, the Burning of Washington, and in the Battle of Baltimore. At Baltimore Robyns was severely wounded while leading his battalion on 12 September 1814. The British Army commander, Major General Robert Ross, was killed in the same action. Writing from , to the Admiralty Lords on 17 September 1814, Vice Admiral Alexander Cochrane singled out the "frequently gallant conduct" of Robyns as worthy of special "favour and protection". Battle of New Orleans Following the defeat at Baltimore, Robyns was brevetted a major on the British Army List. Though still recovering from a wound described as "severe," he accompanied the British expeditionary force which was sent to engage in the Battle of New Orleans. Once again charged with a composite command, he commanded a company in the "composite battalion" of 100 Marines commanded by his senior, Brevet Major Thomas Benjamin Adair (1783–1849), of the Royal Marines. Adair's 100 Royal Marines and a similar-sized party of Edward Nicolls' Red Sticks were brigaded with Colonel William Thornton (British Army officer)'s 85th Regiment of Foot (Bucks Volunteers). Thornton's Brigade performed laudably at New Orleans, overwhelming the American line on the west bank of the Mississippi. The brigade's small triumph, however, was not enough to counterbalance the British disaster of 8 January 1815. Royal Marines also contributed to the subsequent orderly withdrawal by the British forces. Peacetime establishment and later years In spite of the award of a pension for wounds received, Robyns escaped the officer reductions in the Royal Marines establishment of 1814 and 1816. Robyns married Miss Wilmot John (1787–1867), the second daughter of George John, of Penzance, at Madron on 18 July 1815. Routine duties and assignments followed until his retirement in 1835. He was promoted to the substantive rank of major in the Royal Marines on 16 April 1832, thus finally attaining the permanent status of "General and Field Officer (G & FO)", Royal Marines. In 1840 he served one term as Mayor of Penzance, a largely honorary public function. Robyns died in Cornwall on 22 March 1857. He was buried in Madron on 27 March 1857. Promotions and awards Second Lieutenant, (H.M. Marine Forces) 13 March 1796. First Lieutenant, (H.M. Marine Forces) 1 January 1799. Captain, Royal Marines 19 June 1807. Brevet Major, (Army List) 27 October 1814. 28 December 1815 Awarded a pension