I would recommend you grabbing this in warfare.
While everyone's pushing the objective, you could just stay away from hotspots on the map and drive a transport truck straight to enemy HQ. No-one uses these trucks after frontlines been pushed back anyway. Park somewhere near the HQ where the enemies won't find it. Place mine directly in front of enemy supply truck or light armored vehicles, redeploy and do it on other spawns or just wait it out, your choice. You do need some luck, but should be able to grab in one or two games if you aims for it for the whole duration of a round.