I hope you comment here, so i can improve it (mostly balancing)
Its a 4 vs 4 on a 300 x 300 tiles map.

The germans start near the bridges which they must pass to enter the city. They have amored vehicles at start with infantry to get access over the whole city. They have to guard the city at all costs, and if they loose to much of it, they loose at all. But if they stand 2 hours they win. The Allys start around the city in north-west, north, north-east and east. They start with paratroopers and material in transporters at start. My advice is to take the southern zep, or the eastern or the railway station in the city. Later they get tanks as the germans also get. Allys have more tanks and must try to capture the city. After 1 hour the germans can try to break out and try to get contact to a near battlegroup. If they succeed they get access to Kingtigers. If they try to escape to early, the Führer will be angry because he declared this city to fortress. For achieving the goal to smash the enemy both sides have Artillery. The germans moreover habe one Sturmtiger and for each player one Nebelwerfer. But they lack of ammunition so dont waste it. I have seen one game where the Sturmtiger was forced to fight with MG cause he dont had any single shot left. The Allys himself have air support except their paratroopers failed in their mission. They need the Bombers to destroy germans heavy tanks.
Nations for Ally vs Germans (Germans must start south-east)
Germany = Wehrmacht
Japan = Waffen SS (less infantry troops but better tanks)
USA = US Army starting with parachutes
GB = British Army starting with parachutes
USSR = US Army with fewer tanks but with strong polish parachutes (+ 1 air transport, including Bazooka troopers and 1 mortar, later -4 tanks)
And because the map is scripted plz dont play it or host it if you dont like such expirements. I made this map for a challenge but often i saw people who simply quit.
Another tip: Search for tanks on the battlefield!

In 3.7 its Ally T1