Page 885. " the Light Brigade at Balaclava "

Charge of the Light Brigade
Public DomainCharge of the Light Brigade - Credit: Simpson, William
The Battle of Balaclava was fought in 1854 during the Crimean War. It involved a campaign by the British, the French and the Turks to capture the Russian naval base of Sevastopol.  A disastrous Allied cavalary charge during the battle became famously known as the Charge of the Light Brigade.

Page 888. " Wally thought automatically, 'Jezail' "

Public DomainJezail - Credit: Sherurcij
The Jezail is a weapon which was used primarily by Afghan soldiers during the Anglo-Afghan wars.  It is a type of simple musket or matchlock, and is often hand made.

Page 896. " on the far side of the Hindu Kush "

Mountains of Afghanistan
Creative Commons Attribution Share AlikeMountains of Afghanistan - Credit: Officer
The name Hindu Kush applies to the mountain range between eastern and central Afghanistan and north-west Pakistan.