Well during the Bomber Event we have received 3 Bombers Extra and later then the Hangar... Until I had all 3 Extra Bombers unused it was OK. Then in the first close War I have deployed 1 and in the next one the second Extra Bomber. So I was left with one Extra.
And then I have trained one in the Hangar.
During the next mp battle I have realized, that the two Bomber icons are completely identical. Hmmm, I wanted to keep the extra, so didn't use any in that mp battle.
So then back home (while set the troops to retrain), I needed to figure out which icon is the Extra and which one is the "retrainable" Bomber. Then the light of genius shined over me and tapped both icons in Barrack view at the inventory. Above the 2nd Bomber icon in the inventory the green-red sign (info and drop) appeared, so voila - I have deducted - it came from the Hangar.
After congratulating myself for being Einstein again, went for the next mp attack. Easy opponent, did loose just minimum troops, still 1:20 at the counter and already at 95% destruction.
I said, every sec is important, just finish that house off in the corner and quickly released the 1st Bomber from the inventory ... The Extra one...