Panzer III addition, to counter enemy anti-tank rifles, starting from 1943, the Ausf. L version began the use of spaced armour sideskirts and screens (known as "Schürzen" in German) around the turret and on the vulnerable hull-sides. However, due to the introduction of the upgunned and more-armoured Panzer IV, the Panzer III was, after the German defeat at the Battle of Kursk in the summer of 1943, relegated to secondary/minor combat roles, such as tank-training, and it was finally replaced as the main German medium tank by the Panzer IV and the Panzer V Panther. The Panzer III's strong, reliable and durable
Radar, Anti-Aircraft No. 3 Mk. 7 Radar, Anti-Aircraft No. 3 Mk. 7 Radar, Anti-Aircraft No. 3 Mk. 7, also widely referred to by its development rainbow code Blue Cedar, was a mobile anti-aircraft gun laying radar designed by British Thomson-Houston (BTH) in the mid-1940s. It was used extensively by the British Army and was exported to countries such as Holland, Switzerland and Sweden. In British service, it was used with the 5.25 inch and QF 3.7 inch AA guns, as well as the Brakemine missile. Mk. 7 developed from experiments in the mid-WWII era on auto-follow radar systems on the GL Mk. III radar and Searchlight