Oof... Tactic defenders changed mid-war?
The new AW nodes were in the game at the start of the war, but they didn't do anything since the champion tags hadn't been added:  no defenders or attackers could benefit because there was no attacker/defender pool.  
I just logged in to do the second half of my path, and got a pop-up that the tags had been added. 
 So now, mid-war there are tactic defenders on the map and it's too late to switch up my team or my selected attack tactic.  Ouch.