Counter-sniper Tactics
The occurrence of sniper warfare has led to the evolution of many counter-sniper tactics in modern military strategies. These aim to reduce the damage caused by a sniper to an army, which can often be harmful to both combat capabilities and morale.
The risk of damage to a chain of command can be reduced by removing or concealing features which would otherwise indicate an officer's rank. Modern armies tend to avoid saluting officers in the field, and eliminate rank insignia on battle dress uniforms (BDU). Officers can seek maximum cover before revealing themselves as good candidates for elimination through actions such as reading maps or using radios.
Friendly snipers can be used to hunt the enemy sniper. Besides direct observation, defending forces can use other techniques. These include calculating the trajectory of a bullet by triangulation. Traditionally, triangulation of a sniper's position was done manually, though radar-based technology has recently become available. Once located, the defenders can attempt to approach the sniper from cover and overwhelm him. The United States military is funding a project known as RedOwl (Robot Enhanced Detection Outpost With Lasers), which uses laser and acoustic sensors to determine the exact direction from which a sniper round has been fired.
The more rounds fired by a sniper, the greater the number of chances a target has to locate him. Thus, attempts to draw fire are often made, sometimes by offering a helmet slightly out of concealment, a tactic successfully employed in the Winter War by the Finns known as "Kylmä-Kalle" (Cold Charlie). They used a shop mannequin or other doll dressed as a tempting target, such as an officer. The doll was then presented as if it were a real man sloppily covering himself. Usually, Soviet snipers were unable to resist the temptation of an apparently easy kill. Once the angle where the bullet came from was determined, a large calibre gun, such as a Lahti L-39 "Norsupyssy" ("Elephant rifle") anti-tank rifle was fired at the sniper to kill him.
Other tactics include directing artillery or mortar fire onto suspected sniper positions, the use of smoke screens, placing tripwire-operated munitions, mines, or other booby-traps near suspected sniper positions. Even dummy trip-wires can be placed to hamper sniper movement. If anti-personnel mines are unavailable, it is possible to improvise booby-traps by connecting trip-wires to hand grenades, smoke grenades or flares. Though these may not kill the sniper, they will reveal the location of the sniper(s). Booby-trap devices can be placed near likely sniper hides, or along the probable routes to and from the positions. Knowledge of sniper field-craft will assist in this task.
One very old counter-sniper tactic is to tie rags onto bushes or similar items in suspected sniper hides. These rags flutter in the breeze creating random movements in the corner of the sniper's eye, which he/she will often find distracting. The greatest virtue of this tactic is its simplicity and ease of implementation; however, it is unlikely to prevent a skilled sniper from selecting targets, and may in fact provide a sniper with additional information about the wind near the target.
The use of canine units was very successful, especially during the Vietnam War. A trained dog can easily determine direction from the sound of the bullet, and will lie down with its head pointed at the origin of the gunshot.
Read more about this topic: Sniper Warfare