Complex sentence: In North Africa in 1942, he distinguished himself in the early actions of the newly formed Special Air Service (SAS), where, with Ralph A. Bagnold, he developed ways of driving vehicles over the Libyan sand "seas".
Split into simpler sentences: In North Africa in 1942, he distinguished himself in the early actions of the newly formed Special Air Service (SAS). Along with Ralph A. Bagnold, he developed ways of driving vehicles over the Libyan sand "seas".