Complex sentence: After working in an armaments factory in Acton, west London, Violette enlisted in the Auxiliary Transport Service on 11th September 1941, and was posted to Leicester for initial training before being attached to 481 Heavy (Mixed) Anti-Aircraft Battery in Oswestry, Shropshire.
Split into simpler sentences: After working in an armaments factory in Acton, west London, Violette enlisted in the Auxiliary Transport Service on 11th September 1941, and was posted to Leicester for initial training. Later she was was attached to 481 Heavy (Mixed) Anti-Aircraft Battery in Oswestry, Shropshire.