The traditional role of cavalry in war is scouting—gathering information about the enemy's location, strength, and movements—while denying the enemy the same information about one's own forces. Other tasks include raiding into enemy territory and damaging their infrastructure and economy while avoiding conflict with enemy forces. On the field of battle, cavalry were expected to charge into and break up enemy infantry and cavalry formations. The prestige gained by participating in a cavalry charge was such that additional officers would attempt to join one whenever possible. Notable examples of this include Louis Nolan of the 15th Hussars joining the Charge of the Light Brigade in the Crimean War and Winston Churchill of the 4th Hussars joining the 21st Lancers for their charge during the Battle of Omdurman.