Retrain the Same Army

I would like it if you could retrain the same army that you used in a previous attack. It could be similar to the button you press in Boom Beach that allows you to use the same troops again and show the cost, which would be a good addition as well. Sometimes, I train the wrong troops so I realize later. I also forget what my past army was and may have to view it a few times which can be frustrating. Thank you for reading:)

Hi!
I believe this has been ruled out - read the stickies before posting :)