became autonomous. 24 September 1915: 1st bis Bersaglieri Regiment, formed from the three autonomous of the short-lived 13th Provisional Bersaglieri Regiment 22 November 1915: 13th Bersaglieri Regiment On 5 January 1916 the 1st bis Bersaglieri Regiment changed its name and became the 15th Bersaglieri Regiment, while on the same date the 10th bis Bersaglieri Regiment changed its name and became 16th Bersaglieri Regiment. During 1916 only one new regiment was raised: the 14th Bersaglieri Regiment on 11 March with two newly formed and one autonomous battalion. In 1917 the army raised five new Bersaglieri regiments: the 17th and 18th regiments with newly raised battalions, the 19th regiment with three autonomous battalions, and the 20th and 21st regiments with reserve battalions. 31 Jan. 1917: 18th Bersaglieri Regiment 6 Feb. 1917: 17th Bersaglieri Regiment 15 Feb. 1917: 19th Bersaglieri Regiment 1 April 1917: 20th Bersaglieri Regiment 27 April 1917: 21st Bersaglieri Regiment Due to the defeat at the Battle of Caporetto the army was forced to disbanded the 15th and the 21st Bersaglieri regiments with their battalions in November 1917. In 1918 the command of the 16th Bersaglieri Regiment was disbanded and its three battalions became autonomous. After the war four of the regiments raised for the conflict were disbanded (13th, 14th, 17th, 18th), while the 19th Bersaglieri Regiment was renamed 4th Bersaglieri Regiment, and the 20th Bersaglieri Regiment was renamed 9th Bersaglieri Regiment. Of the nine regiments raised during the war none, except for 18th Bersaglieri Regiment, was ever activated again. The 18th was active again from 1 April 1935 until 31 December 1936, from 1 February 1942 until 8 September 1943, and for the last time from 10 September 1993 until 1 January 2005. Cyclist Battalions The twelve cyclist battalions of the peacetime regiments had been raised in 1910. Each consisted of three companies of 150 men, and a machine gun section with two machine guns. For the duration of the war the cyclists battalions operated independently from their regiments and were assigned as needed to higher commands. On various occasions Bersaglieri Cyclist Battalion Groups were formed, but only after the Battle of Caporetto forced the Italian army to retreat from the Isonzo front, during which the cyclist battalions served as rearguard, did the army institute permanent cyclist groups. These four groups were officially instituted on 15 January 1918 and each fielded three cyclist battalions and formed initially the mobile