Actually, not so long ago explosions forced nearby infantry to lay down and crawl for short period of time.
I don't know why they've changed that. Maybe it took away control of your infantry for too long because of chain of explosions (katyusha or pair of GrW-34).
But to me it was fine mechanic. Better that suggested suppression for arty. It made ZiS barrage is actually decent against blobs, which was fine for 60 muni investment.
