Town Hall 7 is a hard Town Hall to defend with because in war most people use drags. And the 3 air defenses available at Town Hall 7 are not always enough to defend against dragon attacks. But some anti 3 bases can make it trickier to attack and can cause your base to take multiple attacks before being 3 starred. Here are some very popular anti 3 star bases. ( Anti Hog and Drag ) We would recommend you to copy one of these bases or to find a new anti 3 base online and use it in war. Its good to tweak minor things here and there to make your base unique. Some common strategies are to put builder huts in the corners so drag or hog attacks could run out of time before a 3 star is attained.
Iron Edge 