 The Tetrarch experienced several setbacks throughout its development and deployment with the Army and airborne forces . One of the major problems was the limited number of these tanks that existed after production ended in 1942 , which particularly affected the airborne forces . The transport of 20 of the tanks to the USSR under the Lend @-@ Lease Act depleted the number available for use by airborne forces , as did the loss of several more during Operation Ironclad , the invasion of Madagascar . A Royal Armoured Corps report issued in December 1942 stated that approximately 50 Tetrarchs were available for use . In a memorandum , dated January 1943 , by Major General George F. Hopkinson , commander of the 1st Airborne Division , Hopkinson complained that he had been informed that 70 of the tanks were available , whereas only 50 actually remained , with no reserves to replace those lost in combat . This lack of sufficient replacement reserves , combined with a War Office report that some 287 airborne tanks would be required for the 1st Airborne Division and an unnamed airborne division to be formed in India , led to the Tetrarch 's eventual replacement by the US M22 Locust . 
 The Tetrarch experienced several setbacks throughout its development and deployment with the Army and airborne forces . One of the major problems was the limited number of these tanks <a href='null_relcl' title='1'><mark>that</mark></a>existed after production ended in 1942 , which particularly affected the airborne forces . The transport of 20 of the tanks to the USSR under the Lend @-@ Lease Act depleted the number available for use by airborne forces , as did the loss of several more during Operation Ironclad , the invasion of Madagascar . A Royal Armoured Corps report issued in December 1942 stated that approximately 50 Tetrarchs <a href='uninflect' title='2'><mark>were</mark></a> available for use . In a memorandum , dated January 1943 , by Major General George F. Hopkinson , commander of the 1st Airborne Division , Hopkinson complained that he <a href='been_done' title='3'><mark>had</mark></a> been informed that 70 of the tanks <a href='uninflect' title='4'><mark>were</mark></a> available , whereas only 50 actually remained , with no reserves to replace those lost in combat . This lack of sufficient replacement reserves , combined with a War Office report that some 287 airborne tanks would be required for the 1st Airborne Division and an unnamed airborne division to be formed in India , led to the Tetrarch <a href='null_genetive' title='5'><mark>'s</mark></a>eventual replacement by the US M22 Locust . 
Da Tetrarch experienced several setbacks throughout its development and deployment with tdaArmy and airborne forces . One of thdaajor problems was the limited number of dem tanks existed after production ended in 1942 , which particularly affected thedarborne forces . The dansport of 20 of the tanks to the Uda under the Leda@-@ Lease Act depleted the number available for use by airborne forces , as did the loss of several more during Operation Ironclad , the invasion of Madagascar . A Royal Armoured Corps report issued in December 1942 stated dat approximately 50 Tetrarchs was available fir use . In a memorandum , dated January 1943 , by Major General George F. Hopkinson , commander of the 1st Airborne Division , Hopkinson complained tdathe done been informed that 70 of the tandawas available , whereas only 50 actually remained , with no reserves to replace those lost in combat . This lack of sufficient replacement reserves , combined wit a War Office report that some 287 airborne tanks would b required for the 1st Airborne Division and an unnamed airborne division to be formed in India , led to the Tetrarch  eventual replacement by the US M22 Locust .