And yet we were able to encircle Prague just fine with a similarly narrow frontage.
We should also not forget our advantage in armaments—the Austrians don't yet have Maxim guns, or they haven't been mentioned so far, plus we have infantry scale mortars and river artillery support. The idea that this will be a hopeless meat grinder is unfounded considering our success against similar fortifications, and our generals aren't going to feed soldiers into one of there isn't a hope of victory. It has been etranger's policy throughout the war that our commanders aren't idiots, and that will continue to be true here.