The Polish paratroopers under command of major-general Stanislaw Sosabowski finally jumped on September 21st on the southern side of the Rhine. They planned to jump two days earlier but the weather was too bad. The Polish could badly use the ferry right now, but the English had removed it because of the Germans. The Polish couldn’t do anything else except dig in and wait for German actions.
The next day two officers of major-general Urquhart crossed the river to tell the Polish that they had to be ready in the nighttime to go to the other side of the river with rubber boats. The two officers also made contact with the XXX Corps. A few reconnaissance cars could have passed the German posts.
In 1944 the Rhine was a wild river without a sluice and it was very difficult to paddle to the other side. Only 52 Polish had passed the river when major-general Urquhart decided to stop the operation.
The second try was on September 23. They had better boats to cross the river in the nighttime. But because of the heavy German gunfire there were only 153 who made it to the other side.
The 1st Airborne Division couldn’t defend itself and was not very successfully in Oosterbeek since September 21. So it was a huge relief when, after the third try to get the Polish across the river, an order came for major-general Urquhart to evacuate.