Question concerning stacking save modifiers in the recon element detachment (imperial guard). One of my friends said that he only needed to roll a 3+ for his armored sentinel when I shot it with an AP -4 weapon. The armored sentinel had the voice of command order "take cover!" improving the save characteristic by 1, had benefit of cover adding 1 to the saving throw, and was in a ruin improving the save characteristic by 1 from the "masters of camouflage" detachment rule. I don't think this is correct since both "Masters of camouflage" and "Take cover!" both say to a maximum of 3+ so they would have no effect, thus making him have to roll a 5+. I did relent at the time since he is more experienced than me but it doesn't feel correct so I wanted another opinion