CHAPTER 1
PHYSICAL GEOGRAPHY
I. Topography
The most important physical feature of the Balkans as a scene of military operations is its wild terrain. The brushy mountain country, craggy peaks, and roadless forest areas offer irregular troops numerous places to hide, opportunity to shift forces unseen even from the air, and locations for ambush.
To the west, the Dinaric Alps follow Yugoslavia's Adriatic coast in a southeasterly direction and bar access to the interior of the country. Although some coastal areas are fertile, the limestone composition of these mountains makes the hinterland a barren region incapable of supporting any considerable population. Deep gorges make transverse movement difficult, and there are only a few secondary roads and rail lines until the central Yugoslav uplands to the east are reached.
From the headwaters of the Drin River, the length of Albania to the port city of Valona, the mountains draw back from the coast, making for easier access to the interior, and assume a north-south direction. South of Valona, the mountains resume their southeasterly march and merge into the Greek Pindus. These latter extend to the Gulf of Corinth, reappearing on the southern side of the gulf in the Peloponnesus.
Directly south of Greece proper is the large island of Crete, of considerable strategic importance. Other Greek islands dotting the Ionian and Aegean Seas are Corfu, Cephalonia, Zante, Rhodes, the Dodecanese, the Sporades, the Cyclades, Lemnos, and Khios.
The central uplands, east of the mountain chain extending the length of the Balkan Peninsula, are fertile enough to support large centers of population and some industry. To the north, this region is drained by the Sava and Morava Rivers, flowing into the Danube; to the south, by the Vardar, wending its way through Macedonia to the Gulf of Salonika and the Aegean.
The eastern portion of the peninsula is bisected by the Balkan Mountains. To the north this area descends to the Danubian plain; to the south, to the steppe-like lands of Turkish Thrace.
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