Army rally to single point

Similar to concept of villagers tasked to build wonder you can click the one button that makes all villagers move to wonder there could a similar button foe every building that can be used to force all army units to move to certain building or tc.

This can be useful in game when there are multiple fights happening across the map and one can prioritize where all units should be tasked.

This can be useful when building a titan or wonder u want to make all army next to a nearby building.