 Tetrarchs did not see any further combat and were deemed obsolete by 1946 ; the last was retired in 1950 . There were several variations on the Tetrarch design , including the Alecto self @-@ propelled gun and the Light Tank Mk VIII , but none of these were ever used in active service with the British Army . 
 Tetrarchs did not see any further combat and <a href='uninflect' title='1'><mark>were</mark></a> deemed obsolete by 1946 ; the last was retired in 1950 . <a href='dey_it' title='2'><mark>There</mark></a> <a href='uninflect' title='3'><mark>were</mark></a> several variations on the Tetrarch design , including the Alecto self @-@ propelled gun and the Light Tank Mk VIII , but <a href='None' title='4'><mark>none</mark></a> of these <a href='uninflect' title='5'><mark>were</mark></a> ever used in active service with the British Army . 
Tetrarchs did not see any further combat and was deemed obsolete by 1946 ; the last was retired in 1950 . It was several variations on da Tetrarch design , including the Alecto self @-@ propelled gun and tdaLight Tank Mk VIII , but don't none of dese was eva used in active service witt thdaritish Army .