The Greek commander was pretty savvy

The Greek commander, General Papagos, seemed to have more sense than the British leadership team. His assessment was that to mount a successful defense on the border with Bulgaria would take 9 divisions with air support. He thought that the British offer of three divisions drawn from North Africa was inadequate and was a strategic mistake for the Briitish. General Papagos thought that the three divisions offered should stay in North Africa, where they would have the greatest effect. General Wavell apparently agreed with General Papagos's assessment, because he was quoted as saying that sending three divisions was a "dangerous half-measure". Churchill and the Chiefs of Staff in Britain would hear nothing of it, and were hell-bent on sending the three divisions, even though it was the worst plan. This is based on the account in Vol.II of the Australian Official History.