under . In each case, several variants of carbines were offered in the under range for uses by cavalry, artillery, constabularies and special troops. Starting in 1909, MLE and MLM rifles were converted to use charger loading, which was accomplished by modifying the bolt, modifying the front and rear sights, and adding a charger guide bridge to the action body, thereby allowing the use of chargers to more rapidly load the magazines. Upgraded to a more modern standard, these rifles served in combat in the First World War. The Short Magazine Lee–Enfield (SMLE) – also known as Rifle, Number 1 Before World War I, the Rifle, Short, Magazine Lee–Enfield, or SMLE, was developed to provide a single rifle to offer a compromise length between rifles and carbines, and to incorporate improvements deemed necessary from experience in the Boer War. With a length of , the new weapon was referred to as a "short rifle"; the word "short" refers to the length of the rifle, not the length of the magazine. From 1903 to 1909, many Metford and Enfield rifles were converted to the SMLE configuration with shorter barrels and modified furniture. Production of the improved SMLE Mk III began in 1907. Earlier Mk I and Mk II rifles were upgraded to include several of the improvements of the Mk III. The compromise length was consistent with military trends as the US Springfield M1903 was only produced in the compromise length and the Germans adopted the kurz (short) rifle concept between the world wars for the Mauser 98k (model 1898 short). Training Rifle – Rifle, Number 2 To conserve resources in training, the British Army converted many .303 rifles to .22 calibre for target practice and training purposes after the First World War. In 1926, the British government changed the nomenclature of its rifles, designating the .303 calibre SMLE as No. 1 Rifles and the .22 calibre training rifles as No. 2 Rifles. For practical purposes "SMLE" and "No. 1 Rifle" are alternate names for the same weapon, but a purist would define a No. 1 as post-1926 production only. Pattern 1913 Enfield The Pattern 1913 Enfield (P13) was an experimental rifle developed by the British Army ordnance department to serve as a replacement for the Short Magazine Lee–Enfield (SMLE). Although a completely different design from the Lee–Enfield, the Pattern 1913 rifle was designed by the Enfield engineers. In 1910, the