Yes, in mixing an attack aircraft with an armored airframe, the Il-2 was probably the first of its kind.I mentioned the USSR developing the "flying tank" concept in the IL-2 by creating an armored airframe.
This is kind of my point. The Il-2 was a very Soviet aircraft. It had lower production standards than US/Commonwealth aircraft, was affected poorly by logistics and training, and was used in an aerial imitation of Soviet standard infantry tactics.It was outlining examples and stuff how notoriously bad Soviet QA/logistics probably affected a great deal of losses of Il-2. And they were always bad at armour and riveting.