The battle of Anzio.
The location Anzio, Italy. The date December 1943.
The allies had invaded Italy in 1943, by 1944 they were at Gutsaw, ( that's south of Rome ) so they made up a massive operation. But what the allies did not know was that the Germans were ready for them.
The Germans being prepared for them were able to push the allies all the way back to where they alomost started!
It took more than 100,000 more supplies and five more months before the allies were able to break free from Anzio.
There were heavy casualties on both sides.
The allies suffered 3,500 casualties and the Germans suffered 5,400 casualties.