Complex sentence: On 10 June a French railwayman informed Tonkin that a train which comprised of at least 11 petrol tankers was parked at the rail sidings at Châtellerault, these were the petrol reserves for the advancing 2nd SS Panzer Division Das Reich.
Split into simpler sentences: On 10 June a French railwayman informed Tonkin that a train composed of at least eleven petrol tankers was parked at the rail sidings at Châtellerault. These were the petrol reserves for the advancing 2nd SS Panzer Division Das Reich.