Communications in the Callikos area also were bombed, Other bombfers, despite encountering large num-bets of German fighting planes, suc cessfully blew up an important bridge at Polykastron, it was said, "On" April io, in-addition to air operations already reported," said the communique, "a formation of fighter aircraft allackea motor. transport convoys "between "Monastir and Prilep, Great confusion and casual ties wore caused in the same area to another formation of motorized columns, destroying Ave tanks and setting six vehicles on fire. Two of our aircraft failed to return," said the communique—United Press, 'Yugoslavs' Resistance Vichy, Apr. 13, Advices from varies. Balkan points which reached here through diplomatic channels today reported intensification of Yugoslav resistance. particularly in Northern Albania and Southern Serbia, In the vicinity of; Skoplje, where "Yugoslavian troops have been regrouped. they were reported to have counter-attacked. They continue to hold in that region, according to the reports received here, positions which enable'them to keep German. communications cut (between Skoplje and Nish and between Skoplje and Salonika,
said "to be in progress between Set Particularly violent ging wok divisions and German light motor-aod columns in valleys near Skoplje und also at Prechevo and Vranje, north of Saapaolie.
The main Serbian army was reported to be falling back into the mountains:-of Bosnia and Serbia, where the Yugoslavs will have advantageous positions for defence, German troops which entered Belgrade at 680 a.m, today pushed on towards the south' but were expected soon to encounter several Yugoslav divisions which bar their way.
Greek sources assert that the British and Greek alr forces retain mastery of the air over the Vardar Valley, and that they had destroyed wooden bridges built by German engineers across the Vardar north of Salonika, United Press.
Text read from the printed page and cleaned; old type leaves the occasional error.