Nazım Pasha abandoned Goltz Pasha's defensive (and probably realistic) doctrine and, though the Ottoman army had severe problems in mobilizing its troops (fewer than half of the expected 600,000 troops), developed a bold offensive plan, including offensive operations on both fronts. Because the Serbian army was, after its defeat in the Serbo-Bulgarian War, considered a weaker opponent even by Western observers, Nazım Pasha planned to attack it first, and render it operationally incapable. He would then attack Bulgaria (which was considered the strongest link in the Balkan alliance) from both the Macedonian and Thracian directions.