 After 27 March, with 21st Army Group pushing deep into Germany, air attacks on the Rhine crossings became fewer.By now the crossing points were covered by integrated systems of heavy and light AA guns, radar and S/L positions, which prevented accurate attacks and destroyed a significant number of aircraft.In mid-April the battery handed over its S/L responsibilities at the Rhine crossings and began carrying out rear-area duties such as guarding and clearing ammunition dumps.