Cass joined the British Army in 1850 and took part in the capture of Tchorguan and the siege and capture of Sevastopol during the Crimean War .
Cass joined the British Army in 1850 serving in the 10th Royal Hussars ( as it became ) . 
 He took part in the capture of Tchorguan and the siege and capture of Sevastopol during the Crimean War .