 In wartime, such explosives could be used for demolishing "chokepoints" to enemy offensives, such as at tunnels, narrow mountain passes, and long viaducts.There is no exact definition of the "tactical" category on range or yield of the nuclear weapon.The yield of tactical nuclear weapons is generally lower than that of strategic nuclear weapons, but larger ones are still very powerful, and some variable-yield warheads serve in both roles.