A tactical nuclear weapon (or TNW) refers to a nuclear weapon which is designed to be used on a battlefield in military situations. This is as opposed to strategic nuclear weapons which are designed to menace large populations, to damage the enemy's ability to wage war, or for general deterrence. Tactical nuclear weapons were a large part of the peak nuclear weapons stockpile levels during the Cold War.
Tactical weapons include not only gravity bombs and short-range missiles, but also artillery shells, land mines, depth charges, and torpedoes for anti-submarine warfare, with nuclear warheads. Also in this category were the former nuclear-warheaded surface-to-air missiles (SAMs), ground-based or shipborne, and air-to-air missiles.Small, two-man portable, or truck-portable, tactical weapons (sometimes misleadingly referred to as suitcase nukes), such as the Special Atomic Demolition Munition, have been developed, although the difficulty of combining sufficient yield with portability could limit their military utility. In wartime, such explosives could be used for demolishing "choke-points" to enemy offensives, such as at tunnels, narrow mountain passes, and long viaducts.Other new tactical weapons undergoing research include earth penetrating weapons which are designed to target enemy-held caves or deep-underground bunkers.
The yield of tactical nuclear weapons is generally lower than that of strategic nuclear weapons, but they are still very powerful, and some variable-yield warheads serve in both roles. Modern tactical nuclear warheads have yields up to the tens of kilotons, or potentially hundreds, several times that of the weapons used in the atomic bombings of Hiroshima and Nagasaki.
Some tactical nuclear weapons have specific features meant to enhance their battlefield characteristics, such as variable yield which allow their explosive power to be varied over a wide range for different situations, or enhanced radiation weapons (the so-called "neutron bombs") which are meant to maximize ionizing radiation exposure while minimizing blast effects.
and there i have presented creenshots of Davy Crocket in game which you can actually fire and also a fictional Soviet Tactical Nuke called Buran 84.
Special thanks for Wikipedia.org for providing the information and pictures
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