Call Of Duty 2 Problem

[Spirit_IN_Black]

i play with the russians at stalingrad where you have to take 3 buildings and destroy an ammunition depot.there's a panzer tank coming and i have to find some sticky bombs to destroy it.i found the sticky bombs,i destroy the tank and i kill all the germans BUT the star at my compass remains at the same point as it weres BEFORE i destroy the tank.the game isn't moving.so i have to go around like an idiot and try to find what the hell is going on.all my comrades are covering their selves like the explosion never took place.DOES ANYONE KNOWS WHY THIS HAPPENS?