BERLIN, Sept. 8, 1939 (UP) -- The German high command issued a bulletin tonight saying that Nazi mechanized forces had broken through Polish defenses and entered Warsaw after brief fighting.
The entry of German advance troops into the Polish capital after a week of war was triumphantly announced by radio to the German people.
A later official announcement said that German troops had reached the town of Gora Kalwarja, on the Vistula, 12 miles southeast of Warsaw, thus further encircling the Polish capital from the south.
Capture of the city of Sandomir (Sandomierz), 55 miles southwest of the temporary Polish capital of Lubin, also was announced by Nazi military circles, which said German advances through the south of Poland threatened to cut off the normal line of Polish retreat toward Rumania.
Sandomir was described as the center of Polish armament industries.
The reported German entry into Warsaw was described by Nazi military experts as all but ending the possibility of any firm stand by the Polish forces.
The southwestern German army had been driving northward against the Polish capital at the rate of about 40 miles a day, surrounding Lodz and making the German domination of all Western Poland complete.
In the south, the German forces had struck due east toward Lwow, encountering some opposition but pushing ahead to the Wistoka river, en route to cut off the Polish retreat. Lublin, where the Polish government had gone earlier this week, appeared in considerable danger due to these maneuvers although a defensive stand might be made on the banks of the Vistula west of Lublin.
An army communiqu