The 6th (Caernarvonshire & Anglesey) Battalion, Royal Welch Fusiliers, was a Welsh unit of the British Army's auxiliary forces. Formed in 1908, from Volunteer units that dated back to 1860, it fought at Gallipoli), in Egypt and Palestine during World War I, and in the campaign in North West Europe during World War II. Postwar it was converted to the anti-aircraft artillery role, then reverted to infantry in 1956 after it amalgamated with a neighbouring unit.